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Kissing Cousins

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"If you're tired of beating around the bush, why not shake the family tree? A hot cousin might fall out."

Romantic/sexual relationships between cousins (meaning, generally, first cousins — as in, two people who share a grandparent) are a phenomenon that has been more accepted in some cultures and eras than others. A great many cultures today accept it, including a majority of the industrialized world.

Marrying one's extended relatives (which is technically known as clan endogamy) seems to have been common in human evolutionary history, since hominids usually lived in small nomadic bands with few available sexual partners. At the other end of the spectrum, much of the modern U.S.A. considers cousin marriage completely taboo, so much so that Hilarity Ensues at the very mention of it. People from backwoods areas (especially the Appalachian Mountains) are often the preferred butt of many bad jokes as well as occasional bits of Self-Deprecation for the alleged prevalence of Kissing Cousins in their culture.

Despite the taboo, cousin marriages are legal in about half the states in the U.S.A., though not as much in the backwoods areas and more in the modern industrialized states: the opposite of what one might expect from hearing all those jokes.note  Legal or not, these marriages are still not very common due to the lingering cultural taboo. All U.S. states permit marriages between secondnote  and third cousins, but even these are looked at funny. In the UK, first cousin marriage is uncommon and would be regarded as rather odd, but it doesn't carry as much stigma as in the U.S., while second cousin marriages and beyond would be seen as unremarkable. In several other western countries, especially the ones that are majority Catholic, first cousins marriages were common and usually not considered a taboo; although it's starting to become more looked-down-upon in the modern age due to globalization and the importation of U.S. culture, as well as greater awareness of the risk of genetic problems, such marriages are still quite common in rural areas. First cousin marriage is also considered acceptable in Japan, South India (states of Tamil Nadu, Kerala, Andhra Pradesh and Karnataka) and the Middle East.

Definitions of exactly what degree of cousin was considered incest actually changed over the centuries. The Romans and early medieval Europe considered first and second cousin marriage to be incest, but third cousin marriage was permissible. After the Germanic migrations Europe had to juggle a couple of different definitions of incest (which were often used as a convenient way to annul political marriages in a time and place where divorce was nigh impossible), until 1215 when a church council officially redefined that anything up to third cousin marriage would be considered incest, but not fourth degree or more. Nonetheless the definition continued to fluctuate over time, until by the 20th century even first cousin marriage wasn't considered incest in much of Europe.

Expect some strong Values Dissonance between the media from the US and other countries, and between certain modern works and works from the nineteenth century and earlier, when the taboo was sometimes non-existent or even inverted. Scholars still vigorously debate the question of why some cultures forbid cousin marriage while others permit or encourage it, but that's beyond the scope of this wiki.

According to both Oxford and Merriam-Webster's Dictionaries, the original definition of kissing cousins was simply a relative known well enough to be given a kiss in greeting, although this meaning has long since fallen by the wayside.

Check out Incest Is Relative for more closely related tropes.

Note: This trope is for cases of actual relationships between cousins. Cousincestuous subtext goes in Incest Subtext.



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    Anime & Manga 
  • In The 100 Girlfriends Who Really, Really, Really, Really, Really Love You, Rentarou's twelfth girlfriend is his junior high schooler cousin Chiyo. Initally he's grossed out (due to both her age and the fact that they're related), but he accepts her after her heartfelt confession.
  • Angel Densetsu subverts this in a Flashback arc that details how Kitano's parents met. Midori is involved with her cousin and childhood friend, Chuji, who has a one-sided rivalry/obsession with Ryuichiro and is most definitely Ax-Crazy. She insists that Chuji isn't evil, and asks Ryuichiro to defeat him in order to open his eyes. That really won't work, since he is evil now, and even considers Midori as just another easy girl. After he tells Ryuichiro this, Ryuichiro angrily lays him out in one attack, after being repeatedly struck with bronze knuckles and shrugging them off. Midori overhears and realizes the truth, culminating in the more heartwarming relationship between her and Ryuchiro.
  • Berserk: Count Julius tells his son Adonis that when he grows up, he may be expected to marry his cousin Princess Charlotte and become the next King of Midland.
  • In Black Butler, Ciel is engaged to his cousin, Elizabeth. They get along quite well; in fact, Elizabeth is one of the few people that Ciel openly cares about.
  • In Blade of the Immortal, Kagehisa Anotsu's true love is the swordswoman Makie Otonotachibana. Her grandmother was the younger sister of Anotsu's grandfather, which makes them second cousins.
  • Bleach: Pure-blood Quincies are expected to accept endogamous Arranged Marriages to prevent contamination of bloodlines even if it means marrying cousins. The Ishida matriarch engaged her son Ryuuken to his cousin when they were both teenagers. Ryuuken and Masaki cared about each other as family but were reluctant to marry because they knew they were romantically ill-matched. Not only was Ryuuken not Masaki's type, but he was also more attached to Kanae than he was allowed to be.
  • Cardcaptor Sakura:
    • Syaoran's anime-exclusive cousin Meiling has a big crush on him and insists they're engaged because of a Childhood Marriage Promise.
    • Tomoyo has a crush on Sakura who is revealed to be her second cousin. In a case of Generation Xerox, Tomoyo's mother also had a crush on Sakura's mother and they were first cousins.
    • When Nelvana Macekred the anime into Cardcaptors, they made two of Sakura's classmates who were clearly fond of each other, with a snarky, cute relationship, into cousins. Whereas they removed the fact that Meiling and Syaoran were cousins by changing Meiling's surname to Rae.
  • Case Closed:
    • In one of the earlier cases, the killer's motive for killing his grandfather, etc. was because he fell in love with his cousin, and the older man forbids them from marrying. The killer's parents were also cousins, and the patriarch reluctantly agreed to their marriage.
    • The series had already hinted that Mary Sera may or may not be Elena Miyano's sister, but Word of God stated during an interview in Singapore that Shuuichi Akai and Akemi Miyano were indeed cousins. Whether they were aware of that fact isn't clear, but they were dating before the latter died.
  • In Ceres, Celestial Legend, Kagami claims that there's been a lot of this in the Mikage family line, although it's worth mentioning the context seriously calls his credibility into question: he's trying to provoke Ceres into emerging from his cousin Aya by coming on to her, taunting her with this claim, and attempting (or at least pretending to attempt) to rape her.
  • Hanamori Pink did a short story called Cherry ♥ Blossom where the main couple are cousins. In fact, it's because they're cousins that they're able to save (the love lives of) their entire school by calling on the powers of their ancestors. It was published with other short manga in Japan, but the only official English translation is as an extra in the last volume of Mermaid Melody Pichi Pichi Pitch.
  • It's been mentioned in a Code Geass Sound Episode that Suzaku Kururugi was engaged to his cousin Kaguya Sumeragi when they were children. Kaguya later decides that she is married to Zero, Suzaku's mortal enemy. What makes it particularly funny is that Suzaku eventually becomes Zero, though it's not known if Kaguya knows that.
  • A Cruel God Reigns: William has a fling with his second cousin, and it is implied that Lilia may have cheated on Greg with her second cousin.
  • In Demon Slayer: Kimetsu no Yaiba, Tengen Uzui the powerful elite ninja and one of the Hashira, is married to three beautiful kunoichi — Hinatsuru, Makio and Suma — later on a databook reveals Makio is actually a relative of Tengen’s, his cousin.
  • Elfen Lied has Yuuka and Kouta, complicated by a Love Triangle with a girl who alternates between homicidal and amnesiac. In the manga, they end up together.
  • In the manga of The Familiar of Zero, the Prince of Albion, Wales, and the Princess of Tristian Henrietta are cousins who are in a secret affair (Long distance). Their love is cut short when Wales is killed.
  • Masahiko and Shion from Family Compo are cousins and there's often a sense of attraction between the two. The manga starts with Masahiko saying Shion is cute before he learns she's his cousin. Oddly the series keeps on swaying between Masahiko being Sora's and Yukari's parent figures, and likewise whether Shion and Masahiko are Like Brother and Sister or are attracted to one another.
  • Downplayed in Fruits Basket; while the cursed members of the Sohma family occasionally refer to each other as "cousins" or "relatives" and some of them have romantic feelings for each other, it's often implied that they're only very distantly related or not related at all (none of their parents are mentioned as being related). The Sohmas are a clan of 150 members, not simply a large family. The current generation of cursed Sohmas likely only call each other "cousins" out of formality and kinship.
  • By a similar token, much the same happens in the manga Gakuen Heaven... except there, the cousin isn't the love interest and doesn't factor into the series' Betty and Veronica equation at all.
  • Makoto and Erio from Ground Control to Psychoelectric Girl have plenty of Ship Tease. It helps that Makoto didn't even know Erio existed until he was sixteen. Makoto also shows attraction to his aunt.
  • In Hanasakeru Seishounen Rumaty and Kajika are unknowingly this. They do not actually get together in the end, but before Kajika and Lee Leng's Relationship Upgrade, the two are the closest out of all of Kajika's Love Interests. Bonus points for being each other's first kisses.
  • The protagonist and his second-cousin in Hanayashiki no Juunintachi.
  • Hetalia: Axis Powers: Austria is the cousin of Germany and Prussia, and he gets a lot of Homoerotic Subtext with them, though the Official Couple is Austria/Hungary. He allows Germany to practice sexual activities with him, to prepare Germany for Italy.
  • Downplayed in Kaguya-sama: Love Is War. In the final arc, Kaguya is betrothed to her cousin Mikado as a backup plan to protect her from her family in the event that Shirogane is unable to do so, though they're very distantly related (second cousins twice removed, or eight degrees of separation).
  • Ayano and Kazuma from Kaze no Stigma are second cousins, with Ayano's father trying to pair them up.
  • Koi to Utatane's plot is pretty much this. The protagonist is a high school guy named Kiichi, who has been in love for a long time with his older female cousin, Hana, who is also a teacher in his school. Due to work circumstances, Kiichi's parents have to move to Hokkaido, while he stays in Tokyo. His parents asked Hana to live with Kiichi while they're gone. Unsurprisingly, living with Hana only strengthens Kiichi's feeling for her. At first, Hana seems too oblivious to this and only look at Kiichi as a younger brother but eventually, Hana also starts developing feelings for him. In the end, Kiichi accidentally revealed his feeling to Hana. While at first shocked at this, Hana eventually returns his feelings. In the epilogue, they are married.
  • Crown Prince Kouen gets some Ship Tease with his first cousin Princess Hakuei in Magi: Labyrinth of Magic. Their respective younger siblings seem to be well aware that there's something going on between the two. Although it's not considered unusual, since their culture is based on Ancient China.
  • Shiratori Ryushi and Aoba Kozue, the Official Couple in the romantic-comedy Mahoraba, are second cousins.
  • In My-Otome 0~S.ifr~, it is revealed that Sifr is the daughter of the King of Windbloom's brother, and it is strongly implied that she eventually marries the King's son, Bruce.
  • Tokimeki Tonight: Aaron and Phila marry, and have a daughter named Coco. Ranze and Shunnote  marry, and have a son named Taku. Coco and Taku get close and she eventually gets pregnant, giving birth to Nene. No one raises an eyebrow at her being the product of incest.
  • Naruto:
    • Rock Lee's Springtime of Youth:
      • Neji is implied to have more than just familial affection for Hinata, because there is a scene where he imagines the story of Romeo and Juliet, in which he casts himself as Romeo and Hinata as Juliet. In his fantasy, they're called Nejio and Hinaette and look at one another with sparkles in their eyes, before they run towards each other and embrace lovingly. In the same series, he gets so angry when he hears about Hinata trying to date Naruto, that he attacks Hinata in fury, and it's not just the big brother instinct anymore, but plain jealousy. Bear in mind that their fathers were identical twins, meaning that Neji and Hinata share 25% of their genes (meaning they are genetic half-siblings), as opposed to the 12.5% that would normally be the case for first cousins.
      Neji: Never... you and Naruto... doing things like that… it's... an infamy!
      • There is also chapter 20, where Neji gets a severe nosebleed when he hears about Hinata's breasts getting even bigger than they already were.
      • Lee's comments about how freakishly similar all the Hyugas look to each other, even by family standards, might also be hinting at just how close the Hyugas are.
      • Neji also acts like a pervert towards the female characters in the alternate universe Naruto the Movie: Road to Ninja, including Hinata. He acts like this especially towards Hinata.
      • In Canon, Neji remarked to his father that Hinata was cute when they first met as children.
    • Karin showed some interest in Naruto at one point. Consider the fact that they're both from the Uzumaki clan. Her attraction to Sasuke is also this to a lesser degree, since the Uzumaki and Uchiha are genetically related, however distantly.
    • The First Hokage, Hashirama Senju might do this when he married Mito Uzumaki, as the Uzumaki are an offshoot of the Senju. Such practice is not unusual; the two clans tend to trade marriage partners to maintain their ancestral connection. On top of that, the arrangement allowed Hashirama to keep an eye on Kurama, who was sealed within Mito. However, their exact relatedness is not stated.
    • Then, of course, the final arc reveals that the Hyuga are related to the Senju, Uzumaki, and Uchiha. Naruto ends up marrying Hinata. Though since their (known) most recent common ancestor lived hundreds of years ago, it doesn't pose much of a problem.
  • In Nerima Daikon Brothers, Hideki has a crush on his cousin Mako, who in turn is attracted to her cousin (and Hideki's brother) Ichiro.
  • Mori and Honey from Ouran High School Host Club are first cousins, and quite close. It's probably just a case of True Companions, but Mori's bodyguard/protector-like relationship to Honey sure pleases the Yaoi Fangirls both In-Universe and out. Renge tries to encourage them to play it up a few times.
  • Which one of the girls in Please Twins! is related to Maiku? In the manga, both of them. The one who isn't his sister turns out to be his cousin. They still get together, and if being cousins is an issue, they never say so.
  • Rosario + Vampire: Tsukune Aono's cousin Kyouko becomes attracted to him when she sees how tough he has become.
  • Amusingly when Sailor Moon S was Macekred in The '90s English dub, Cloverway turned Haruka and Michiru into cousins to try and eliminate the lesbian content. But they didn't remove the subtext successfully, rendering them lesbian kissing cousins.
  • In Sakura Diaries, the main character Touma's younger cousin, Urara, is constantly trying to sleep with him and keep him away from other women.
  • In the Yuri Genre series Sakura Trick, the Beta Couple Kotone and Shizuku are cousins and have The Big Damn Kiss and one point.
  • Sand Chronicles's Fuji at one point dates his cousin Mariko, who takes care of him after moving to Tokyo. They eventually marry, but it takes a long time to gain his parents' approval.
  • In Shadow Star, Shouko Fukuyama has these feelings for her cousin Kyouji. Hell, she has it bad for him; she's about 13 years old and wants to bear his children. She has an It's All Junk hissy fit after being told off by his old crush Jyun. Eventually, Kyouji, who had been comatose for years, dies, and Shouko is all alone… until she sees him after he turned into a... "Virgin Princess" and vows to keep on loving him.
  • In a filler episode of Shugo Chara!, Amu admits that her cousin Shuu was her first real crush.
  • In Super Dimension Fortress Macross/Robotech, Minmay and her cousin (no blood relation) Kaifun.
  • Fumi from Sweet Blue Flowers has an unrequited crush on her cousin Chizu. She notes that, even if Chizu wasn't engaged, it wouldn't work out between them because they're cousins and because Chizu is a girl. It's worth mentioning too that Fumi and Chizu actually had a sexual relationship, with Chizu's engagement to a man signalling their break-up. It's later implied by Chizu to have not been so unrequited after all, as she cries to Fumi about how "We're girls... and cousins... so I can't be that kind of girl."
  • In Ten Yori Mo, Hoshi Yori Mo, Tadaomi's father and Mio's dead mother were siblings, so a Tadaomi/Mio match-up would be this. Tadaomi wants it badly to happen, but Mio does not.
  • Katsuhito's first wife in the backstory of Tenchi Muyo! was his first cousin.
  • In This Ugly Yet Beautiful World, Takeru Takemoto's cousin, Mari Nishino, is in love with him.
  • In Tokyo Ghoul :Re, Kanae von Rosewald is obsessively in love with his cousin, Shuu Tsukiyama. While their family has a long history of Royal Inbreeding, Shuu seems oblivious to Kanae's feelings. This leads to Kanae becoming a Crazy Jealous Guy, repeatedly attempting to murder Kaneki out of jealousy.
  • In Venus Versus Virus, Sumire's male cousin, Riku, likes her. He's several years younger than her, so it's unrequited.
  • In The World is Still Beautiful, Kitra has feelings for his cousin Nike, but she only seems to him as a good childhood friend.
  • World's End Harem: Fantasia: Main protagonist Arc and his original Love Interest Aurelia, whose Arranged Marriage to the prince of The Empire kickstarts the Myth Arc, are initially said to be cousins, in an already closely related group of noble families. Chapter 31 clarifies the Tangled Family Tree: The Patriarch Arges Isteshia, despite being referred to as Arc's grandfather, is in fact his maternal great-uncle (Arc's mother was Arges's niece), and Aurelia is his granddaughter. This makes Arc and Aurelia second cousins.

    Asian Animation 
  • Angelalily, one of the wolves from Pleasant Goat and Big Big Wolf, is related to both her cousin Wilie's parents. She also has such a massive crush on Wilie that it reaches the point where she sees him through a Crush Filter.

  • Discussed by Eddie Izzard, in regards to the British royal family:
    Eddie: She was one of our more frumpy queens. They're all frumpy, aren't they? Because it's a bad idea when cousins marry! [...] First rule of genetics: spread the genes apart, you know? But the royals are just obsessed with: "Are you a royal family? Are you a royal member? Well, then you can marry me, 'cause you're the same gene pool and our IQ's will go down the toilet." Fantastic. That's why there's no crazy royals, they're all kind of: [drawls] "Hello, hello. What do you do? Oh, you're a plumber. What on earth is that?"
  • Among Jeff Foxworthy's indications that "You Might Be a Redneck..."
    "If your family tree never forks..."
    "If you go to family reunions hoping to pick up girls..."

    Comic Books 
  • In the Douwe Dabbert story Florin the Loafer, count Justus van Bottericke attempts to force his cousin Gwendoline to marry him, because if she does not, he will lose the rights to his title.
  • FF introduces "Kid Immortus" (a version of Kang from shortly after he was Iron Lad, but long before he was Kang or Immortus) who is constantly advised by his girlfriend Ravonna Renslayer. This eventually turns out to not actually be the real Ravonna, Kang's Lost Lenore, but a possible future version of Valeria Richards. Kang/Immortus/etc. is Nathaniel Richards, descendent of Valeria's grandfather.
  • The Inhumans: Black Bolt, the king of Attilan, is married to his cousin Medusa. Sorta justified: due to the limited gene pool of the Inhumans, just about every two-Inhuman marriage involves cousins.
  • MAD
    • In their parody of Return of the Jedi, the characters discover at the end that they're all related to one another, but since Han and Leia are "only" second cousins, they can safely marry.
    • In one Monroe comic, the eponymous teen was visited by his punky Scottish cousin, and they made out a few times. She decided she didn't want to see him anymore because he was freaky with his "finger-skateboards", but as he said, at least he got to "make oot" that summer.
  • Old Man Logan features a Bad Future where the Hulk and cousin She-Hulk have bred and produced inbred offspring. This is all due to her being the only woman able to "take the pace" of Hulk sexually. Hulk and She-Hulk are both radioactive, too, which probably doesn't help... It's not the first time the romantic/sexuality thing has been brought up between these two, as some of Fixit's dialogue with her implies he's more than game, but there's also some implication that in this case, it may not be consensual.
  • In Sonic the Hedgehog (Archie Comics), Knuckles the Echidna and his girlfriend Julie-Su are actually distant cousins, but neither one is aware of it, and it's not directly acknowledged anywhere in the series. They did, however, release a family tree at one point, forgetting that their family tree closes back in on itself.
  • Sub-Mariner: The ultimate desire of Namora has been shown to be her cousin Namor. Namor's late wife Dorma was also his cousin, and Namorita (daughter/clone of Namora, and therefore cousin of Namor) was in love with Namor at one point, though it was unrequited.
  • Superman:
    • Clark Kent's daughter engages in a literal example in a story taking place in an alternate future. (Lucy and Lois are sisters, which makes Lucy and Jimmy's son the cousin of Lois and Clark's daughter. Apparently, that doesn't bother Lola or Jimmy Jr, let alone their parents, happily watching them make out. The issue itself makes no mention of them being cousins, with the main obstacle to their happiness being It's Not You, It's My Enemies. They do live Happily Ever After in the end.
    • The Man of Steel himself apparently had such feelings for his cousin Kara (Supergirl). In that one, Supergirl tries to find Supes a girlfriend. After many failed attempts, we get a scene where it's obvious they are really attracted to each other, which seems to make it perfectly clear that the law is the only thing stopping them from pursuing a relationship. Eventually, Kara fixes Supes up with a girl that is nigh identical to herself, but older, and they hit it off. Unfortunately, it turns out yellow sun is her Kryptonite, and he can't leave Earth unprotected, so they must part.
    • In Action Comics #260, Clark has Kara disguise herself as a superheroine from another dimension, and she and Supes proceed to have make-outs (in front of Lois), all to fool some dim alien invasion.
    • And from Bronze Age storyline Krypton No More comes Superman walking out of the shower and finding his cousin waiting for him... and the writer seems completely unaware of the tone he is setting.
    • In Supergirl: Candor, Kara is mind-controlled by evil telepath Saturn Queen into getting engaged to Ultraman, an evil Alternate Universe counterpart of Superman, but genetically it makes no difference.
    • In Many Happy Returns, Pre-Crisis Supergirl and Superboy (Kon-El) are immediately smitten with one another, which an irritated Linda Danvers comments on.
  • In the German comic Wendy, the titular character dates her foster-cousin for most of the story until her aunt decides that she doesn't want to adopt him and his twin sister after all, as they aren't as rich anymore. After that, he breaks up with Wendy to date his previous foster sister Vanessa instead, while implied to still live in her house.
  • In X-Wing Rogue Squadron, Plourr Illo was engaged to her cousin since childhood. In the arc where she returns to her homeworld and takes up the reins, she's shown resisting the idea of marrying him, but since he shows a number of her traits—lots of courage, love of fighting and freedom, disdain for tradition for tradition's sake and even being a fighter pilot like her—she warms up to him. It's never shown whether they actually get married at some point. And their being cousins never seemed to bother Plourr, it was only the "arranged marriage to an aristocrat she hadn't seen in 20 years" part that was a problem.

    Comic Strips 
  • Norman Drabble once ran into his girlfriend at a family wedding. After spending some time having fun with her, he asks why she's there. It turns out they're both related to the bride. A few strips later, it was revealed that they weren't blood relatives, but Norman didn't tell his girlfriend that immediately.

    Fairy Tales 
  • Several of Madame d'Aulnoy's Fairy Tale couples are first cousins — a natural consequence of their both having to have Royal Blood and reflecting the royal families of their day. These include Princess Belle-Etoile and The Bee and the Orange Tree. Also, Belle-Etoile and her husband Cheri are double first cousins—their fathers are brothers and their mothers are sisters.
  • Also occasionally featured in the fairy tales of Henriette-Julie de Murat and Charlotte-Rose de Caumont La Force.
    • In Murat's fairy tale Perfect Love, the main couple, Irolite and Parcin Parcinet, are first cousins. The two have another cousin, Azire, who is in love with Parcin Parcinet.
    • Another Murat fairy tale, The Palace of Revenge, features first cousins Imis and Philax in love. Subverted, however, in that the two do not get married at the end.
    • La Force's The Good Woman features two cousin couples. The main couple, Lirette and Finfin, are first cousins. The Beta Couple, Mirtis (Lirette's older sister) and Finfin's unnamed younger brother, are also first cousins.
  • In the first written version of Beauty and the Beast, Beauty and the Beast turn out to be first cousins: his mother and her biological father are siblings.
  • Also featured in the Breton fairy tale The Groac'h of the Isle of Lok. The protagonists, Houarn Pogamm and Bellah Postik, are first cousins through their mothers.
  • The French fairy tale The Little Green Frog features a second cousin couple, Prince Saphir and Princess Serpentine. Their fathers are first cousins.
  • Ourson by the Comtesse de Segur: the protagonist Ourson and his love interest Violette are first cousins.
  • Prince Vivien and the Princess Placida has the titular Vivien and Placida, who are first cousins. Placida is the daughter of King Gridelin and Queen Santorina, while Vivien is the king's nephew.
  • Rosanella features a second cousin couple. Rosanella's father and Mirliflor's father are first cousins.
  • In many Arab fairy tales, reflecting common practices, a woman is normally expected to marry her first cousin. (One example of such a couple is found in The Story of Dschemil and Dschemila, which comes from Libya.) This causes serious complications when she falls in love with another man; some tales have men forced to leave a tribe lest it happen. However, some first cousins graciously concede; this is often resolved by the new bridegroom offering the first cousin his own cousin.
  • In the Arabian Nights story The Story of Prince Ahmed and the Fairy Paribanou, the sultan's sons compete for the hand of their first cousin, Princess Nouronnihar. Ali, the middle son, ends up marrying her. Averted with the protagonist Ahmed (the sultan's youngest son) and his wife Paribanou, who are not relatives.
  • The now-forgotten French fairy tale novella The Tyranny of the Fairies Destroyed by Madame d'Auneuil features several couples. The main couple, Philonice and Anaxandre, are first cousins.

    Fan Works 
  • During the Random Slashy Interludes in Bag Enders, Merry and Pippin often resort to each other when they can't find anyone else, and sometimes include Frodo.
  • The Frozen fanfic Becoming Family has a romance developing between Elsa's daughter Katja and Anna's son Matteus. In their case, Katja is adopted so they're unrelated by blood.
  • Ben 10 has a rather large following for Ben and Gwen since the first series. This can be connected to the original draft of the show in which Ben and Gwen were not relatives but rather in the same school class.
  • In The Berserker's Bride, Hiccup and Snotlout were originally meant to marry (Snotlout thinking that she was useless while she thought of him as The Bully), only for her to instead marry Dagur to unite their tribes. After she visits Berk with Dagur and reveals that she is pregnant, Snotlout tries coming on to her (thinking that she's now attractive) and even almost tries raping her.
  • Blind Courage: Impa was in love with her cousin, Zelda's now-deceased mother Iriana. Nothing came out of that crush because Iriana was married off at age 14.
  • Discussed in Brontide, where Harry and Ginny had officially adopted Teddy as their son, and he worries that this would prevent him from pursuing romance with Victoire since she's technically his cousin.
  • Child of the Storm touches on this a couple of times in regards to Harry and Jean Grey, his second cousin on his mother's side, who's about two and a half years older than he is. The author, who's British and therefore less fazed by such a relationship, included her as someone Harry might end up dating in a poll (naturally, he would Take a Third Option).
    • When they meet, the two are immediately drawn to each other and are revealed to have a psychic connection that is theorised to possibly even date back to the womb. However, on Jean's side, the relationship is entirely platonic (she sees him as the little brother that she never had) while Harry's attitude is a little more complicated. Emotionally, he wants a big sister type figure. However, he's a straight Hormone-Addled Teenager, and Jean is gorgeous. Ultimately, emotions win, though he doesn't suddenly become blind to Jean's good looks, being rather embarrassed when he sees her in a skimpy bikini.
    • Maddie is another kettle of fish entirely, for all that she's Jean's Separated at Birth twin sister and she has the same mental connection. When he sees her in a thin, skimpy nightie, he pays rather more attention than he did with Jean, trying not to stare. It's later noted in the sequel that a part of him thinks more than just cousinly thoughts about her.
  • Dancing with My Punchlines has Maedhros and Fingon (who are step-cousins but nonetheless), and Finrod and Curufin, and Finrod and Caranthir.
  • Ducktales Rewritten features Dewey and Webby falling in love before Webby's origin as Scrooge's genetically engineered clone/daughter is revealed. She and Dewey initially plan to break up as they reason they can't be together since they're related, but since all parties support them as a couple, Gene the Genie volunteers to be used to make a wish to change the DNA of Webby and her "sister" clones so they're still sisters but no longer related to Scrooge.
  • Earth-27:
    • Jade Nguyen/Cheshire and Thomas Blake/Catman, are former lovers and (albeit unaware) second cousins due to his paternal grandfather and her maternal grandfather being brothers.
    • Gomez and Morticia Addams are also second cousins, but very much happily married.
  • In Fangs & Fins, first cousins James and Arianna are forced into an arranged marriage.
  • Harry Potter and the Lack of Lamb Sauce: It's briefly mentioned that Amycus and Alecto Carrow's father married his cousin when he was 16. Later in the story, there were government-enforced plans for an Arranged Marriage between a pair of first-cousins-once-removed, but considering the girl in question is 17 while involuntarily betrothed to her mother's cousin, who's more than twice her age, her mother is understandably outraged by this arrangement.
  • It comes up in Kara of Rokyn when the titular character tells her family about her cousin's teenage crush on a girl nicknamed "Supergirl". When asked if he fell for her, Kara dodges the question.
    Kara Zor-El said, "Would you believe that Kal once told me that one of the first girls he ever fell for in his life was named Supergirl?"
    The others at the dinner party reacted with shock, laughter, surprise, disbelief, curiosity, amusement, or a combination of the above.
    "How's this, Kara?" asked Van-Zee, cautiously. "You don't mean he fell for you, do you?"
    She smiled an I-know-something-you-don't smile at him.
  • The pairing of Little Foot and Ali is surprisingly popular from The Land Before Time series in fanwork. However, Little Foot's grandpa clearly states that Ali's herd are Little Foot's family's cousins.
  • In the My Little Pony: Friendship Is Magic fanfiction, Maternal Instinct, the Changeling royal family, the House of Roachanov, has a reputation for practicing royal intermarriage, much like the European monarchies of old, ironic as the culture is predominantly of Imperial Japan. The Crown Princess, Pupa, is already set to marry her first cousin, Prince Morphin.
  • Nala: My Father's Madness portrays Simba and Nala's relationship as this. Nala is secretly Sarafina and Scar's child, while Scar is Simba's uncle.
  • In No Longer Alone Sirius and his cousin Narcissa had an affair up until three hours before her marriage to Lucius Malfoy.
  • Not the intended use (Zantetsuken Reverse): Downplayed. Julius's parents are technically cousins, but their last common ancestor was over 300 years ago. The person who reveals this says that he figured there wasn't much of a blood relation there, and therefore didn't object to the wedding.
  • The Phineas and Ferb fandom has a fairly large following for a pair of Original Characters named Marie Flynn (daughter of Phineas and Isabella) and Thomas Fletcher (son of Ferb and Vanessa), with the latter having a crush on the former. ("Isn't she your cousin?" "Step-cousin." Of course, even that falls apart in Alternate Universes where Phineas and Vanessa are half-siblings.) All in all though, Thomarie is pretty cute... even if Marie is as oblivious as her father.
  • Defied in Pokémon Reset Bloodlines. Clair is very close with her cousin Lance, and admits that she could probably fall for him if they weren't related. But given that the clan's elders are pressuring her to get married and have kids, she decides to keep that to herself in case they get weird ideas.
  • In The Pride That Never Was, Shani and Kovu are love interests despite being first cousins once removed.
  • Queens of Mewni: It wasn't uncommon for the queens in the Butterfly kingdom to marry a cousin of theirs, in fact, Celestialism, the main religion in Mewni, doesn't consider relationships between cousins incestuous.
    • Cosmica married her cousin Pyxar. Pyxar's mother Nixie objected strongly to the union, but it was less about them being related and more because she still resented Cosmica's mother for 'stealing' Nixie's intended love interest. There were some that did object to Cosmica and Pyxar's marriage, but it was less that they were cousins it itself and more that cousin marriage was practiced among the oppressive Titans the Mewnian people escaped from, and many feared a return to that time.
    • Helia married her cousin Clovald. Clovald was literally the only person that the demisexual Helia was interested in.
    • Diana married her cousin Tileford. The notable thing was, of all the royal matches, they were the only one to have a perfect score in compatibility. Granted, some blamed their daughter Sky's diminutive stature on the consanguinity.
    • While Venus did not marry her cousin Swan (for the obvious reason that they were both women), it's Swan who Venus lost her virginity to, and made her into the hypersexual Ethical Slut Venus became (which is more than we can say for Swan).
    • Crescenta would have an affair with her cousin Acorn to spite her philandering husband. Some believed her daughter Waxinne to be the result of that affair, though she claims Waxinne is Hawk's.
  • This appears as Surprise Incest in the Jem fanfic The Ripple Effect. Jerrica's mother Jacqui grew up in the foster care system after her mother died in childbirth. At the end of the story, Jerrica and her sister Kimber find papers that show who fathered Jacqui. It turns out that they share the same grandfather as Eric Raymond. Jerrica had a crush on him when she was younger and Eric, during his Villainous Breakdown, developed a Villainous Crush on Jerrica and tried to rape her. Kimber and Jerrica are both grossed out by learning about their relationship with their now-deceased cousin.
  • In The Secret Life of Punzie, Rapunzel and Anna are cousins but are very much in a sexual relationship. This is often glossed over as not only is cousin-incest considered less risque than between siblings but because they are both women and therefore the stigma is less justified.
  • Superman: House of El: Kara and Kal, justified for a few reasons. For one, Kara manufactured herself the Kryptonian equivalent of an IUD, so there’s no risk. Two, since they're the last two Kryptonians in existence, if there are going to be any more they'll either have to use Fortress technology to either ensure they have healthy kids or Kara will have to use it to find a way to make Kryptonians and humans compatible. Three, they're the only ones who can teach each other to control their powers during sex so they won't harm their fragile human partners. Clark takes a little convincing, since Kara is his cousin by blood and sister by adoption, but he comes around, and they do enjoy their time together.
  • The Superman story Superman of 2499: The Great Confrontation provides some examples:
    • Alan and Kath are twenty-second cousins, so no one objects to their relationship.
    • On the other hand, Adam and Sybilla are first cousins. None of their parents is comfortable with their getting together.
  • In Their Bond, Zelda's cousin, Prince Daltus of Lucrum, asks her to marry him. She declines his offers and, either way, she's already engaged to her Guardian, Impa.
  • There and Back Again: As the story's AO3 tags and multiple moments of Ship Tease make clear, Jon and Sansa (who are first cousins through her father and his mother being siblings) are the main endgame Official Couple.
  • In the Smallville fanfic Under the Influence, exposure to Red Kryptonite leads first cousins Clark and Kara to spend the night together.
  • In Yule Ball Drama, Daphne Greengrass and Tracey Davis are first cousins and in a romantic relationship.
  • In Sleeping Dogs Lie, Sirius mentions having kissed Bellatrix in a non-cousinly manner when they were teenagers.
  • In The Snorkackic Trio, Andromeda says she kissed Sirius when she was thirteen, out of curiosity about what kissing a boy was like. Sirius makes no comment on-page about the matter.

    Films — Animation 
  • In Bambi, Faline is referred to as Bambi's cousin in some supplementary material. In the book they are first cousins through their mothers. Disney made sure to not mention this in the film, making it vague if they're related or not.
  • In Bee Movie, Referenced and discussed as one of the many adult jokes in the film. This is common for bees. When a hesitant Adam asks Barry if the female bees swooning over them are their cousins too, Barry shrugs it off and tells him they're only distant cousins so it's okay.
  • The Lion King:
    • In The Lion King, Fridge Logic dictates that Simba and Nala must be either cousins or half-siblings because Scar and Mufasa are the only adult male lions in the pride. This is later defied in The Lion Guard where it's shown that Nala's dad is a random, unknown lion.
    • The Lion King II: Simba's Pride defies this by specifically mentioning twice that Scar is not Kovu's father, though fans still speculate. Kovu was meant to be Scar's son but then they noticed that'd make Kiara and Kovu cousins once removed. Of course, this just raises the question of who Kovu's real father is, and why he looks so much like Scar.
  • Referenced in Quest for Camelot by Devon, one half of the two-headed dragon, when the human heroes inquire what exactly they are.
    Devon: Frankly, we're the reason cousins shouldn't marry.

    Films — Live-Action 
  • The main character in Barry Lyndon courted his cousin, which was a lot more common in that day.
  • Dar and Kin in The Beastmaster. It's actually achieved through Fridge Logic; their relationship to each other is never noted at all in the film after the reveal that Dar is the son of Kin's uncle the King, and they don't see any problems in a romantic relationship by the film's end.
  • In The Blue Lagoon (1980), Richard and Emmeline are cousins, traveling with Richard's father to San Francisco, where, presumably, she would have been raised as his sister. (Her parents had died, which is why they were traveling.) After the shipwreck, and the loss of the only adult with them, Paddy the ship's cook, things get a little more personal when puberty sets in and they don't have anyone to explain it to them.
  • Clerks: Jay says he'll have sex with anyone — including his own cousin, possibly.
  • In Cruel Intentions 2, the girls in the shower claim to be this (even though in real life they were played by real-life identical twins, making the claim rather implausible and the scene an almost-crossover with Twin Threesome Fantasy).
  • Dames: Lovers Jimmy and Barbara are members of the same extended family. "It doesn't seem right loving each other the way we do, being related," says Barbara, only for Jimmy to parry that they're "13th cousins."
  • The romantic leads in The Ghoul, Betty Harlon and Ralph Morlant, are distant cousins.
  • In The Godfather Part III, Michael's daughter Mary and his nephew Vincent are in love. Michael is against their relationship, but Mary's mother Kay is not. However, Michael's objections are apparently not based on consanguinity, but on the danger of Vincent's lifestyle.
  • Brought up humorously by Daisy in The Great Gatsby (2013) when her cousin Nick asks her to visit him to reunite with Gatsby and when she arrives, she discovers his house is full of flowers courtesy of Gatsby. She murmurs he must be in love with her.
  • In the Saoirse Ronan movie How I Live Now, protagonist Daisy quickly falls in love with her cousin Edmond (they're first cousins, her dad is the brother of Edmond's mother) and the feeling is mutual... so much so that they eventually move beyond the kissing stage.
  • In Mean Girls, Karen talks about what a good kisser her cousin is.
    Karen: Yeah, but... he's my first cousin. Like, you have your cousins, and then you have your first cousins, and then you have your second cousins...
    Gretchen: No, honey, uh-uh.
    Karen: That's not right, is it?
    Gretchen: That is so not right.
  • My Girl 2: Vada Sultenfuss and Nick Zsigmond have Belligerent Sexual Tension throughout the movie, but will become cousins soon when her Uncle Phil gets engaged to his mother Rose. That doesn't stop Vada and Nick from having a pretty dramatic First Kiss right before Vada leaves to go home.
  • Averted in Once Upon a Time in China where Wong Fei Hung and his Aunt 13 are not blood relatives, though he calls her aunt even when they are around the same age because their fathers are sworn brothers.
  • In Romy and Michele's High School Reunion, Michele lost her virginity to her cousin Barry.
  • The Secret Garden:
    • In the 1993 film, Colin wants to marry his cousin Mary when they grow up so that they can always be together. Mary is amused but uninterested. Colin's response is a jealous loathing of Dickon, the servant boy who helps them in the titular garden, with whom he suspects Mary of falling in love. Their mothers are stated to be identical twins, thus making this even iffier genetically, since the offspring of identical twins are genetic half-siblings (assuming the other parents involved to not also be identical and to be two different people).
    • In the 1987 Hallmark adaptation adult Colin (portrayed by a very young-looking Colin Firth) proposes to Mary at the end and she accepts. However, in this version, they are not related — Colin's father is an old friend of Mary's parents instead of being Mary's uncle.
  • The romance between Heather Mason and Vincent Cooper in Silent Hill: Revelation 3D. In the first Silent Hill film, Heather's biological mother Dahlia was the sister of the villain Christabella. In Revelation 3D, Vincent is the son of the villain Claudia, who is Christabella's sister. Therefore, Dahlia and Claudia are also probably sisters and Heather and Vincent are probably cousins. It could be possible, however, that Dahlia and Claudia could be unrelated if one was a maternal half-sibling (uterine) and the other was a paternal half-sibling (agnate/cosanguine). It's likely, however, that the writer of the second film missed the fact that Dahlia and Christabella were sisters in the first film. It's not the only Retcon.
  • In the silent film version of Snow White (1916) starring Marguerite Clark, Snow White and Prince Florimond are cousins.
  • In Tombstone, Doc Holliday tells Wyatt Earp that as a teenager, he fell in love with his first cousin; she entered a convent over their affair.
  • In The Wolf of Wall Street to establish what a Cloudcuckoolander Donnie Azoff is, after Jordan Belfort and Azoff form a business partnership Belfort asks him if the rumors that he married his cousin are true. Azoff says they are (as seen on the Quotes page), and when Belfort asks about the risk of their kids having a disability, Azoff says they would drop them off at an institution to deal with kids like that.
  • In the Victorian farce The Wrong Box, Michael tries to resist his attraction to his cousin Julia:note 
    Michael: We both know what kissing leads to, and if I may be blunt, our children would be idiots.
    Julia: Why, is there insanity in your family?
  • In The Yards, Leo, the main character, had a relationship with his cousin Erica when they were younger. There is a romantic subplot between the two throughout the movie.
  • The 2009 film The Young Victoria is about the early life of Queen Victoria and her marriage to Prince Albert, her first cousin.

  • In ½ Prince, Rose kisses Prince in the game. Eventually, it's revealed that Rose's player is actually her cousin. And by cousin, it's meant that she's her mother's older sister's husband's uncle's third daughter.
  • The 1632 series has fun with this trope. The locals see nothing wrong with cousin marriage. The transplanted Americans are a lot more sensitive about this sort of thing (being from West Virginia, they've heard ALL the "inbred hillbilly" jokes).
  • In the Babar books, the title character eventually married his cousin, Celeste. The Animated Adaptation changed this particular aspect, making the two unrelated and turning their relationship into Childhood Friend Romance instead. Of course, the books never specify what degree of cousin Celeste is.
  • In Felix Salten's Bambi, Bambi and Faline are cousins (their mothers are sisters). They start off as Childhood Friends but come mating season as adults and Bambi becomes deeply attracted to his female cousin. They end up having twin foals together, but by their birth Bambi has already abandoned them.
  • Skinflick in Josh Bazell's Beat the Reaper is a young mafioso in love with his cousin. The narrator is non-judgmental about this.
  • Ultimately subverted in Blandings Castle: The third book has older members of the family pushing cousins Ronnie and Millicent to get married, though they see each other as Like Brother and Sister (the book was released in 1929, and could be seen as a commentary on changing attitudes about the idea). They do briefly form a miserable engagement when their respective relationships suffer Second Act Breakups, but naturally, things work out in the end.
  • In Henry De Vere Stacpoole's The Blue Lagoon, first cousins Richard "Dicky" Lestrange, a 10-year-old boy, and Emmeline Lestrange, an 8-year-old girl, are left stranded on an island after a shipwreck. The only adult looking after them dies after a few years and the cousins have to fend for themselves as they grow up together. As a result, they fall in love and have a child together.
  • In Bright Lines, Ella is attracted to her female cousin Charu. It's even more complicated because Ella was orphaned as a child and raised as Charu's sister. Charu strictly sees Ella as her older sister, but Ella only sees Charu as a cousin.
  • In A Brother's Price, Jerin Whistler and Princess Rennsellaer find, after downgrading his virginity status to technical levels, that they share great-great-grandmothers making them third cousins. Ren declares that it is distant enough for the relation to be fine and, indeed, that's how it's seen. At another point in the story, the adult princesses discuss their first cousin (son of their father's biological sister) Cullen as a potential husband. They collectively agree that while he'd be a good husband on his own merits, the biological relationship is just too close to be acceptable.
  • In the Bunduki novels by J.T. Edson, Bunduki and Dawn are adoptive cousins. They end up married.
  • In Lawrence Block's The Burglar in the Library of the Bernie Rhodenbarr book series, it's revealed that Earlene Cobb is pregnant with her cousin Orris' baby and that she put sugar in the snowblower's gas tank to punish him for showing interest in their cousin Molly.
  • In Dorothy L. Sayers's Busman's Honeymoon, Lord Peter Wimsey worries about children because of how his brother's turned out. Harriet points out that his brother married his own cousin; his sister, who married a commoner, has children who are perfectly fine.
  • The Camp Half-Blood Series and its associated spin-off series:
    • Some couples in the franchise, particularly from the Greco-Roman series, are technically this, as their divine parents are part of a really complicated Tangled Family Tree. For example, the main couple, Percy and Annabeth, are first cousins once removed, since the former's father, Poseidon, is an uncle of the latter's mother, Athena. However, The Last Olympian handwaves this by stating that gods don't have DNA, so it isn't creepy for couples with different divine parents to have a relationship. Couples with the same godly parents, however, are creepy.
    • Other than gods, the Magnus Chase and the Gods of Asgard series has Sam being betrothed to Amir, who is explicitly stated to be a relative on the mortal side. They are both descended from the Real Life 10th-century traveler Ahmad ibn Fadlan, but whether there are closer shared ancestors is unknown. Cousin marriage (or at least marriage between close families) is actually a common practice in the Arab world, not only to strengthen alliances (the Arabs being traditionally a clannish society) but also to keep inheritance in-family.
  • A Certain Magical Index: In her brief appearance, Touma Kamijou's cousin Otohime Tatsugami tries to hit on him.
  • In Charmed Life, by Diana Wynne Jones, Cat and Gwendolen's parents were first cousins. Chrestomanci explains that when they decided to marry, it caused their family to make a great fuss. "It is, you see, rather a bad thing for cousins to marry when there's witchcraft in the family."
  • Played with in Crescent City: the Autumn King arranges a marriage between his daughter, Bryce, and her cousin, Cormac, seemingly just to be a dick to her. Bryce has no intention of going through with it, while Cormac seems to like the idea. He doesn't; it just gives him an excuse to visit the city for his rebel activities.
  • In The Darkangel Trilogy there's a love triangle in which all three participants are cousins. Two of them didn't know they were related at first, but the discovery has no effect at all on their romance either bad or good—it doesn't seem to be relevant to them.
  • Wang Yuyan has a one-sided crush on her cousin Murong Fu in Demi-Gods and Semi-Devils.
  • Deryni: According to King Kelson getting a dispensation to marry a first cousin once removed isn't a problem, implying that the Church would be reluctant to allow marriage between a couple more closely related.
  • In The Dinosaur Lords, lovers Jaume and Melodía are first cousins, and no one bats an eye at their romance, even pushing them towards engagement. Deliberate, as the story takes place in the equivalent of fourteenth-century Europe.
  • Natsuki, the main character of Earthlings, is besotted with her cousin Yuu, and the two declare themselves "married" at age eleven. It's largely a result of both having been abused and unloved by their families; both felt the other was the only who fully understood and truly loved them. Things take a more disturbing turn when, after being molested by a teacher and convinced he'll kill her, Natsuki requests Yuu has sex with her, secretly intending to kill herself right after... when they're twelve. Then they're found out, and things go From Bad to Worse.
  • In Eight Cousins' sequel Rose in Bloom, the only people that the heroine Rose even considers marrying are three of her seven male cousins: Archie (who falls for Rose's lady-in-waiting Phebe), Charlie "the Handsome," and Mackenzie, aka Mac. Rose's guardian, Uncle Alec, explicitly says that he does not approve of cousins marrying, but that he can't think of a better possible match for her; meanwhile her aunt Clara, Charlie's mother—overheard and tactlessly quoted by yet another cousin—holds that Rose should marry one of them "to keep the money in the family." After Charlie dies, Rose falls for Mac and marries him, while Archie and Phebe finally overcome the family veto to their relationship. As a bonus, Archie's 12-year-old brother Jamie gives Rose a love declaration at some point, which she rejects not because he's her cousin, but because she sees him as Just a Kid.
  • The corrupt churchman Annias tries to persuade Queen Ehlana to marry her cousin, Prince Lycheas, in the David Eddings Elenium trilogy. She refuses, mostly on the grounds that she can't stand him but also on the grounds that he might actually be her half-brother, given that her father and his mother were a little closer than siblings ought to be. He isn't. Lycheas was actually the son of Annias, which was part of why he was pushing the marriage.
  • The Elric Saga: Elric of Melnibone's betrothed is his cousin Cymoril. He damns himself (and ends up killing her) by accepting the demonic blade Stormbringer to rescue her from her brother Yyrkoon.
  • The Empirium Trilogy: Double subverted with Audric and Ludivine, who are a pair of engaged cousins at the beginning of the series. The engagement was arranged by their parents as part of a political move, and Audric is in love with Rielle, not Ludivine. That said, Ludivine states in Kingsbane that she'd have no issue having a threesome with Audric and Rielle, something that Audric agrees with.
  • In Tanya Huff's The Enchantment Emporium Gales, a clan of witches usually (though not always) marry their cousins to keep from diluting the magic inherent in their genes and to keep said magic secret. Furthermore, because there are far more female Gales than male the boys usually "make the rounds" of their age group cousins before settling down. This imbalance between the sexes also leads to a lot of "close" relationships between the Gale girls. One of these, between the main character Alysha and her cousin Charlie, is particularly focused on in the book.
  • In Endo and Kobayashi Live! The Latest on Tsundere Villainess Lieselotte, Baldur is asked to marry one of distant cousin Lieselotte's sisters as a condition of being Bruno's successor. And his crushing on Fiene can't avert this, since Fiene turns out to be Lieselotte's first cousin by blood and thus is also a cousin of Baldur's.
  • In Isabel Allende's Eva Luna, when Rolf Carlé comes to America from post-World War II Austria, he lives with his uncle and aunt and is attracted to both of his cousins, and not only are his affections reciprocated by both girls, but they actually jump him and they "share" the cousin/lover for their teenage years, until Rolf becomes an Intrepid Reporter and the girls marry local guys. The three still remember these escapades as some of their happiest moments ever. Also, it's mentioned that the girls' parents did seriously consider having him marry one of the girls, "sighing because there was only one of him".
  • In The Fire's Stone, Aaron's first love, Ruth, was his cousin.
  • In Christopher Moore's Fool, Pocket has running on/off affairs with both Goneril and Regan, unaware that they're both his first cousins by way of rape. Probably wouldn't have stopped any of them if they did know, though. He certainly doesn't seem horrified by it when he does find out. In fact he winds up marrying the youngest sister Cordelia. Whether she knows about the family connection or not isn't revealed.
  • In the 1818 version of Frankenstein, Victor Frankenstein and his fiancée, Elizabeth Lavenza, are cousins who also happen to have been raised in the same household. In the 1831 version, Elizabeth was adopted rather than being related to Victor, but the two were still raised as siblings.
  • Averted in The Goblin Emperor: Maia, the new emperor, does not know much about the noble families, but when his marriage is discussed he draws attention to the fact that some of the potential brides must be related to him, and says that he would rather not marry a cousin. His secretary promptly excludes any woman closer than the third degree of kinship from the list.
  • The Wilkes and Hamilton families in Gone with the Wind have the tradition of cousins marrying each other. The text makes it clear that multi-generational inbreeding is the main reason for Melly's frail health and physique.
  • In John C. Wright's Green Knight's Squire, when it comes up that Nerea is Gil's cousin, Ruff is quick to point out that means second cousin once removed.
  • In Un grito en las tinieblas; la vida de Zárate Arkham, the titular character sleeps with her cousin, although both of them were possessed by the spirits of their uncle and his female servant respectively—which makes the sex scene a case of double incest.
  • Harry Potter:
    • It's implied that purebloodism leads to frequent inbreeding. Arthur and Sirius explicitly state that all surviving pureblood wizards are related to some degree. Particularly after the wholesale slaughter of the second Death Eater war, there are simply so few purebloods left that those who still care about blood purity will have no alternative but to marry their cousins. Essentially if a pure or half-blood wizard marries someone who isn't Muggle-born, they're going to be related in some way — however distantly.
    • Sirius and Regulus Black's parents, Orion and Walburga, were second cousins. Walburga already had the surname Black even before she married.
    • Teddy Lupin and Victoire Weasley are fourth cousins once removed.
    • Molly and Arthur Weasley were popularly thought to be this, as a certain Ignatius Prewett married Lucretia Black, who was Arthur's second cousin. However, Lucretia was Molly's aunt by marriage, not her mother.
    • For a long time, Harry and Ginny were strongly implied to be third cousins through the House of Black, until new information Jossed the theory by making Harry's paternal grandfather unrelated to the Blacks.
    • After Tonks's Patronus takes a canine form, Harry wonders if she had been in love with Sirius, her cousin once removed since he was an Animagus who turned into a dog. It turned out to be Lupin, a werewolf, however.
    • The Gaunt family is described as "An ancient, in-bred, pure-blood wizarding family living in slovenly conditions in a shack in Little Hangleton." This is supposedly the main cause of poor Merope's "cross-eyed" appearance, and a streak of mental instability, such as with Morfin Gaunt. Although in this case, it's quite strongly implied that the Gaunts have gone much further than this trope to keep the bloodline "pure".
    • Interestingly, as a case of Pragmatic Villainy, while the Malfoys are Fantastic Racists, they avoid first-cousin marriage—explicitly because they've seen how this drove several other pureblood families insane. Granted, there are so few pureblood families that they still end up marrying third-degree cousins, etc. at times, but they try not to be stupid about it. Sometimes they'll even marry half-bloods rather than a first cousin.
  • Heralds of Valdemar:
    • Owlsight has a brief relationship between Darian and (adoptive) double first cousin Summerdance.
    • The Last Herald-Mage Trilogy has Treven and Jisa, grandson and great-granddaughter of Queen Elspeth the Peacemaker, married in secret before inheriting the throne from Jisa's father Randale. They are actually not blood cousins since Randale was infertile and turned to Herald Vanyel instead, but this is not widely known. It caused brief controversy in court before everyone became resigned to it; given that both Elspeth and Randale made serious use of Altar Diplomacy it may be they objected at least as much to the marriage as the relationship itself.
    • In the Mage Winds books, Firesong boasts of being a descendant of Vanyel on "both sides". Vanyel had sired a pair of twins for the Tayledras. Seven hundred years later, and given what an insular population the Tayledras are, it's not surprising that his bloodline crossed itself a few times.
  • In Hope Leslie, there's William and Alice and, years later, Hope and Everell, but in both cases, they are distant cousins.
  • In the young adult book How I Live Now by Meg Rosoff, teenage cousins Daisy and Edmond fall passionately in love. Daisy wonders uneasily for a while "if that's the feeling you're supposed to have when your cousin touches a perfectly innocent part of your anatomy that's even fully clothed". By the middle of the book, she doesn't care. The book treats their romance sympathetically.
  • Played with in The Hunger Games. The Capitol does not approve of Katniss's close friendship with Gale, seeing him as a potential rival to Peeta, so they claim the two are cousins. This is plausible since they both have black hair, olive skin, and gray eyes, as typical of people from the Seam. In the third book, President Coin asks Katniss if she wants Gale declared as her new lover, which would make them this trope in the public's eye. Katniss declines.
  • Stephen Colbert's stalking of his ex-girlfriend Charlene (as in the hit song "Charlene (I'm Right Behind You)") had been a Running Gag for quite a while before it was revealed that they were also cousins. In his book, I Am America (And So Can You!), he says that it's okay to marry your cousin because The Bible doesn't say you can't.
    Colbert: Let's see... Leviticus Chapter 18 Verse 12—"Thou shall not uncover the nakedness of thy father's sister" ...blah blah blah... "thy mother's sister" ...yeech... "of thy father's brother", there were some sick Levites... "of thy daughter-in-law" ...fair enough... "of thy brother's wife." Nope! Nothing about cousins.
  • In I Saved Too Many Girls and Caused the Apocalypse, one of Rekka's heroines is his relative Hibiki, and her first conversation to Rekka is asking him to marry her. However, it turns out that she wants to marry him, not because she loves him, but because she wants to end both the Namidare and Banjo bloodlines in one fell swoop.
  • In Andre Norton's Ice Crown, Nelis asks whether Roane is "ringed" to her first cousin Sandar, which causes Roane to laugh. Though at the end, he explains that he is the queen's first cousin, to show that their connection is not romantic.
  • Illyria by Elizabeth Hand is about the romance between first cousins Maddy and Rogan, whose fathers are twins.
  • Zig-Zagged twice in InCryptid: Sarah and Artie like each other but Cannot Spit It Out. They're only cousins by marriage, plus she's adopted, plus they're different species (she's not even a mammal), so the main obstacle to them getting together is each one thinking the other doesn't like them that way.note 
  • In In the Time of the Butterflies, Dede and Jaimito are cousins and her sister Maria Teresa has a brief Love Triangle between her two cousins, brothers Raul and Berto.
  • In Jade Green, Charles lusts for his cousin Judith and is secretly planning on raping and killing her after she rejects her advances, much like the title character herself.
  • Jaine Austen Mysteries: Vladimir ends up marrying his cousin Sofi in Death of a Trophy Wife.
  • In Jo's Boys, and How They Turned Out: A Sequel to "Little Men", Jo and Fritz's younger son, Teddy, mentions he wants a sweetheart like all his friends and that he asked cousin, Josie, first.
  • In Jude the Obscure Jude and his cousin Sue fall in love. It's the reason they resist their attraction in the first place which causes so many problems down the line. The novel attempts to make the argument that the judgments and restrictions of society are worse than the actions of the characters.
  • The Kharkanas Trilogy:
    • Hunn Raal's three cousins Serap, Risp, and Sevegg seem devoted to him, and rumor has it that's because their loyalties are forged beneath the furs. They're second cousins, so it's legal but still raises eyebrows.
    • Averted with Faror Hend and Spinnock Durav. They're first cousins, and Faror Hend's attraction to Spinnock is so obvious even her commander has to tell her to restrain herself, while Spinnock is completely clueless.
  • King's Game: Origin mentions that cousins Kazunari and Natsuko are in love. In contrast to most examples, they get scorn for their relationship. It's mentioned that cousin incest was legal but socially unacceptable in 1970s Japan.
  • In the Knight and Rogue Series Michael has a rather serious crush on Rosamund who is his second or third cousin (it never says the exact relation) and who, since they grew up together, sees him as a brother.
  • In the Kushiel's Legacy series by Jacqueline Carey, distant royal cousins (his father is her great-grandfather's brother) Imriel and Sidonie fall for each other. Hard. However, their relatives (and the nation at large) aren't so much annoyed at the idea of relatives marrying as they are annoyed that Imriel's mother tried to take over the kingdom (twice, orchestrating an invasion the first time around) and at least some of the populace (mostly the ones still healing the scars from the invasion) thinks Imriel would do the same.
  • In Anne Rice's Lives of the Mayfair Witches trilogy, 13-year-old Mona Mayfair has a list of the male cousins she intends to sleep with and gets a considerable way down it before going on to other things.
  • In UK children's author Malcolm Saville's Lone Pine series, first cousins Jon and Penny Warrender are engaged by the end of the final book.
  • In the Lowlands of Scotland series, Jamie McKie ends up married to both of his first cousins (not at the same time).
  • Suzuho in Magician's Academy is Takuto's cousin, and naturally one of the haremettes fighting for his affection.
  • In Maiden Crown, Prince Oleg, Sophie's uncle, tries to find a way to keep Sophie home in Beregod Castle at the beginning by considering the idea of marriage between her and her cousin Yaropolk (the son of his late sister), whom he can make his heir because he has no children. Thankfully for Sophie, who hates Yaropolk, her mother doesn't agree to it when Oleg writes her about it and she's betrothed to King Valdemar instead.
  • In Making Money, marrying cousins is mentioned as traditional for the Lavishes in order to keep the money in the family, although "occasionally they married outsiders to avoid the whole 'three-thumbs' situation."
  • In Mansfield Park, the main character, Fanny Price, marries her first cousin Edmund Bertram. (The elder Mr. Bertram was concerned about adopting Fanny for this very reason, though his objection was not to incest but to Fanny being of a much lower status than a baronet's son.)
  • In Jorge Isaacs's María, the titular María is courted by her second cousin and narrator of the story, Efraín. The family doesn't necessarily approve, but it's less for their blood relation and more because Efraín is about to go study abroad and María is an ill girl who will not live for too long. It ends in tears when Efraín goes to study in London and María dies of her illness when he's still there.
  • Sachiko Ogasawara in Maria Watches Over Us is intending to marry her cousin Suguru after she graduates. It's an Arranged Marriage, and he's gay, but Sachiko has stated she has had feelings for him in the past.
  • In the novel Middlesex, the protagonist's parents were second cousins that eventually fell in love, but what they didn't know was that the father's parents were actually brother and sister, resulting in a rare recessive gene to make their child Calliope (later Cal) born intersexed.
  • In The Mists of Avalon, Morgaine and Lancelet. In the myths they're unrelated and Morgaine's interest in him is one-sided. Lancelet also winds up having a threesome with his other cousin, Arthur, and his wife Gwenhwyfar.
  • In the Montmaray Trilogy, both Sophie and her brother Toby are in love with their cousin, Simon. But neither of them knew he was their cousin when they fell in love with him, but both continue to engage in relations with him after finding out.
  • In The Moonstone by Wilkie Collins, Rachel's has two suitors, both are her first cousins.
  • Mushoku Tensei: Jobless Reincarnation:
    • One member of Rudeus Grayrat's harem is his cousin Eris. He loses his virginity to her and eventually manages to Marry Them All, having two children with each of his haremettes.
    • According to Orsted, in the previous timelines where Rudeus did not exist, Eris eventually married her other cousin Luke.
    • Rudeus and Eris' daughter Christina enters a relationship with her second cousin Edward, whose father was Rudeus' cousin.
  • In Nerve by Dick Francis, the protagonist is hopelessly in love with his cousin. She spends much of the story discouraging the idea, though it turns out the feeling is mutual, and she's beginning to come around toward the end.
  • Nyaruko: Crawling with Love!: Cuune wishes to marry her cousin Cuuko. However, Cuuko can't stand Cuune and wants a bigamy with the main couple.
  • An Observation Log of My Fiancée Who Calls Herself a Villainess: Joana is the fiancée of Shaun, and formerly Cecil. They're also cousins.
  • A central part of the plot in One Hundred Years of Solitude is the fact that the founders of the Buendía clan were cousins, and therefore they feared the family would sooner or later breed monsters if they ever in-bred from that point on. Despite all efforts, it happens anyway.
  • Anne Elliot in Persuasion is wooed by her cousin (and her older sister wants to marry that same cousin). It's implied that he's actually a few branches away on their family tree, but he still flirts with Anne by saying he hopes her name never changes. Also, Henrieta Musgrove marries her first cousin Charles Hayter.
  • In the Thai epic poem Phra Aphai Mani, Sin Samut and Arunratsamee are first cousins.
  • Pride and Prejudice: Mr. Collins is a cousin of some sort to the Bennet sisters and comes to their house with the intention of marrying one of them.
  • In Rebecca, the titular dead wife and her cousin, Jack Favell, were lovers. This relationship is presented to further underline Rebecca's depravity.
  • In Reborn to Master the Blade, everyone but Inglis herself (due to being an old man reincarnated into a female body) is all for her marrying her older cousin, Rafael. The most prominent supporter is her younger cousin and Rafael's younger sister, Rafinha, as she wants to stay with Inglis forever and doesn't want anything or anyone tearing them apart. But their fathers are also all for the union, saying that if anyone could get Rafael to consider marriage, it would be Inglis.
  • In the Nero Wolfe novel The Red Box, Nero deduces that one of the characters is interested in marrying his cousin. Ultimately, she is revealed as not actually being related.
  • The Reynard Cycle: Two of the suggested brides for King Lionel are his cousins by his aunt. No one raises any objections over this.
  • In the King Arthur trilogy that begins with The Seeing Stone, the narrator is a medieval teenager (named Arthur) whose family circumstances parallel King Arthur's. He and his first cousin Grace are planning on a betrothal when they find out that Arthur's parents are really his foster parents and that he's actually the son of Grace's father by a peasant woman — so they're half-siblings, not cousins, and any thoughts of marriage have to be dismissed immediately. There's close and then there's too close.
  • In Sense and Sensibility, Colonel Brandon's first love was his cousin Eliza Williams. They planned to elope, but his father stopped them and forced Eliza to marry Colonel Brandon's older brother. In the present, Eliza's namesake daughter (and Brandon's ward) is commonly believed to be Brandon's natural daughter.
  • Seraphina: Staying true to the Western European feel of the setting, first cousins Prince Lucian and Princess Glisselda of Goredd are engaged.
  • The Shadowhunter Chronicles:
    • The Lightwoods and Herondales are related through Edmund Herondale, whose daughter Cecily married Gabriel Lightwood. This means that, before meeting Magnus, Alec has been crushing on a distant cousin (Jace), though the latter doesn't reciprocate it.
    • Kit Herondale's feelings for Ty Blackthorn are also this. Not only do the Blackthorns have the same, unnamed Herondale ancestor that Kit's family is descended from, but one of Kit's ancestors is a woman named Eva Blackthorn, who married Tobias Herondale and started the whole Lost Herondale line.
  • A Song of Ice and Fire: Cousin marriage isn't considered incest in this setting, only parental incest and sibling incest are (and the latter is okay if you're a Targaryen), so there are several examples.
    • The most prominent example is Tywin Lannister, who married his cousin Joanna.
    • Tywin and Joanna's daughter Cersei is also sleeping with her cousin Lancel (her cousin on Tywin's side if you're curious). It becomes a plot point, thanks to how sensitive that information is—though not because he's her cousin, but because she's the king's widow, and how jealous her twincestuous brother is. Yeah, it kinda runs in their family... and has done for centuries: there are two main lines of Lannisters, the ruling family based in Casterly Rock and the cadet, Lannisport branch in charge of the harbour, customs and navy. They crisscross regularly. What? Do you really think the Rock could ever trust another House to run their trade hub?
    • Ned Stark's parents Rickard and Lyarra were first cousins once removed, Lyarra being the daughter of Rickard's grandfather's brother (her surname was already "Stark" before she was married).
    • Also found in the Tyrell family: Lord Mace Tyrell's mother is Olenna Redwyne, and Mace's sister Mina Tyrell married Olenna's nephew, Lord Paxter Redwyne—thus Paxter and Mina are first cousins.
    • Jon Arryn's second wife, Rowena, was a cousin. Like Joanna Lannister and Lyarra Stark, her surname was already "Arryn" before she married.
    • The Targaryens, due to their obsession with blood purity, would marry their siblings—or cousins if they did not have a sibling to marry. Around the Dance of the Dragons, the Targaryen intermarriages with each other and their relatives the Velaryons make for a very Tangled Family Tree (though maybe less inbred considering Rhaenyra's "Velaryon" children were more likely the result of an affair, though they all died without issue).
      • Aegon the Conqueror's parents, Aerion Targaryen and Valaena Velaryon were cousins of some variety, as Valaena was herself a Targaryen on her mother's side. This meant that future Targaryen-Velaryon couplings were consanguineous to a degree.
      • Aenys I, the son of Aegon the Conqueror and his second wife, Rhaenys, married his cousin Alyssa Velaryon due to not having a sister.
      • Aemon I, the eldest son of King Jaehaerys I, was supposed to marry his older sister, Daenerys, when they came of age, but she died at 7 years old of an illness. While Jaehaerys considered marrying him to Alyssa, another sister, Queen Alysanne pointed out how Alyssa was more interested in her second son Baelon, who was closer to her in age. As such, they had Aemon wed to Jocelyn Baratheon, who was his half-aunt since her mother, the aforementioned Alyssa Velaryon, was also the mother of Jaehaerys and Alysanne. It did help that the two were only a year apart, and fell in love with each other quickly at a feast meant to celebrate Aemon becoming the Prince of Dragonstone (the title given to the heir to the Iron Throne). They married and had one daughter, Rhaenys, who would wed her second cousin Corlys Velaryon and whose bloodline would run through House Velaryon via her granddaughter Baela.
      • Viserys I married Aemma Arryn, his first cousin. Aemma's mother, Daella, was another one of Jaehaerys I's daughters, and thus a sister of Baelon and Alyssa, Viserys' parents. After Aemma died, he was nearly wed to Laena Velaryon, his cousin Rhaenys' daughter, but balked at her being a little girl at the time, and decided to marry Alicent Hightower instead. After she came of age, Laena married Viserys' brother, Daemon.
      • Viserys I's daughter Rhaenyra married her second cousin Laenor Velaryon (brother of the aforementioned Laena Velaryon). After Laenor died, she married her uncle Daemon and had three children with him, including Viserys II, from whom the current generation of Targaryens are descended.
      • Following the Dance, Aegon III was married off to his cousin Jaehaera (daughter of Aegon II and Helaena, his mother Rhaenyra's half-siblings/his father Daemon's nephew and niece) to unite the Black and Green camps, though she died without issue. He then married Daenaera Velaryon, who was his fourth cousin once removed/fifth cousin.note 
      • Baela Targaryen, Daemon and Laena's daughter, married Alyn Velaryon, who was ostensibly her first cousin as the bastard son of Laenor. Since Laenor was gay, however, it's likely that Alyn was actually fathered by Laenor's father, Corlys, making him Baela's uncle. Alyn also had an affair with Elaena Targaryen, Aegon III's daughter with Daenaera Velaryon. Daenaera's great-grandfather was Corlys' brother, making Elaena and Alyn second cousins twice removed or first cousins three times removed, depending on who you ask.
      • Aegon IV and his first cousin Daena (his father, Viserys II, and her father, Aegon III, were brothers) had an affair and conceived Daemon Waters, later christened Blackfyre, the instigator of the titular Blackfyre Rebellions. One of Daemon's daughters, Calla, later married her uncle Aegor Rivers, Aegon IV's son with Barba Bracken.
      • Aerys I was betrothed to his cousin Aelinor Penrose, though he showed no interest in her (or anyone else, really), preferring the company of books instead.
      • Aerion Targaryen, son of Maekar I, married his first cousin Daenora, daughter of Maekar's older brother Rhaegel.
      • Because the Baratheons are descended from Aegon the Conqueror's bastard half-brother, the bride and groom in any Targaryen-Baratheon marriage will at the very least be distant cousins. Aside from Aemon and Jocelyn, this was the case with King Robert's grandparents Ormund Baratheon and Rhaelle Targaryen, whose betrothal was arranged after Rhaelle's brother Duncan declined to marry the daughter of Lyonel Baratheon.
      • Rhaegel Targaryen's marriage to Alys Arryn was the third Targaryen-Arryn coupling in history, following Viserys I and Aemma Arryn (Rhaegel's great-great-great-grandparents), and Daella Targaryen and Rodrik Arryn (Aemma's parents).
      • Rhaegar Targaryen's marriage to Elia Martell was the third such union in history, following the Double In-Law Marriage between Daeron II and Myriah Martell (Rhaegar's ancestors) and Myriah's brother Maron and Daeron's sister Daenerys (Elia's ancestors). Elia's brother Doran later reveals that he planned to wed his daughter, Arianne, to Rhaegar's brother, Viserys, which would be the fourth union, and, when that failed, sent his son Quentyn to woo Rhaegar's and Viserys' sister, Daenerys (which also didn't work).
    • Lord Wyman Manderly at one point suggests he or his second son Ser Wylis marry his cousin Lady Donella Hornwood, partially hoping to get her lands for sure, but also as an attempt to protect her because taking care of your own is something House Manderly actually cares about. House Bolton is, as a result, directly in their crosshairs thanks to how terribly Ramsay treated Donella when he forced her to marry him — then "let" her die alone.
    • Implied with Princess Arianne Martell and her cousins, the Sand Snakes (her uncle Prince Oberyn's bastard daughters). Arianne offers to fight any other woman who is sleeping with her lover unless they are a Sand Snake, for she "loves her cousins well". She and one of the Snakes, Tyene, also tried to "share" their first partner, but it didn't quite pan out.
  • In Spoonbenders, Matty has an uncomfortable sexual attraction towards his older cousin Mary Alice, having activated his psychic abilities — Astral Projection — accidentally while spying on her and her friend from the closet. They aren't related by blood, but it's still pretty euwy.
  • Sword Art Online has a complicated case. Suguha Kirigaya wrestled with feelings for her older brother Kazuto, then when he became trapped in a VR game, her mother revealed that he was actually her cousin, adopted as an infant after his own family died in a traffic accident—him discovering that fact on his own led to him distancing himself from his adopted family. Suguha was overjoyed when Kazuto finally came out of his coma, less so when he revealed he'd found a girlfriend while stuck in the video game, since Suguha knew that her feelings for him were unhealthy and unrequited, she tried to find a safer target for her affections, like this "Kirito" guy she met online one night in another VR game. Then Suguha found out Kirito and Kazuto were one and the same, meaning she'd fallen in love with her cousin twice over, which resulted in a brief Heroic BSoD. Most of this aside from the Surprise Incest at the end is omitted from the anime adaptation.
  • In The Tale of the Flopsy Bunnies Flopsy Rabbit is married to her cousin Benjamin Bunny.
  • In A Tangled Web (1931) by L. M. Montgomery, the Dark and Penhallow families have intermarried almost exclusively, to the point that during the time period the book takes place, pretty much all the marriages and relationships shown are between cousins.
  • Camille and Thérèse in Thérèse Raquin, though their marriage didn't involve much if any, sexual activity.
  • German novel The Tin Drum has Agnes and Jan Bronski. It is left to speculation on whether the main character Oskar is Jan's son or Agnes's husband Alfred. Agnes's second child is definitely from Jan and she kills herself because of realizing that.
  • Tolkien's Legendarium:
    • The Fall of Gondolin: The Elf Maeglin was in love with his first cousin Idril Celebrindal, who is squicked by this, for "the Eldar wedded not with kin so near, nor ever before had any desired to do so."
    • The Silmarillion: Ar-Pharazôn, the last King of Númenor, married his first cousin, Tar-Míriel, against her will. It is claimed Numenorean laws prohibited any marriage closer than second cousins.
    • The Fall of Númenor: Queen Ancalimë and her husband Hallacar are distant cousins, sharing a great-great-grandfather (Vardamir, second King of Númenor). Though, their marriage was mostly political, and their relationship was pretty toxic.
    • The Lord of the Rings:
      • Aragorn and Arwen are first cousins sixty-seven and seventy-four times removed, as Arwen's uncle also happens to be an ancestor of Aragorn's many, many generations up the tree. Here's a family tree to help you keep it all straight.
      • Galadriel and Celeborn are second cousins — Galadriel's maternal grandfather and Celeborn's paternal grandfather were brothers.
      • Sam Gamgee and his wife Rosie Cotton are third cousins. Sam's great-grandmother Rowan was the older sister of Rosie's great-grandmother Rose.
    • Merry Brandybuck's parents Saradoc and Esmeralda are second cousins. Saradoc's grandmother Mirabella and Esmeralda's grandfather Hildigrim were siblings (both children of Gerontius Took and Adamanta Chubb). Merry marries his third cousin Estella Bolger, who is the great-granddaughter of Hildibrand Took, another of Gerontius and Adamanta's many children.
    • Frodo's parents, Drogo Baggins and Primula Brandybuck, are cousins by marriage, making them both cousins with Bilbo and therefore making Frodo Bilbo's cousin twice over, as old Gaffer Gamgee explains:
      The Gaffer: Mr. Drogo married poor Miss Primula Brandybuck. She was our Mr. Bilbo's first cousin on the mother's side (her mother being the youngest of the Old Took's daughters); and Mr. Drogo was his second cousin. So Mr. Frodo is his first and second cousin, once removed either way, as the saying is, if you follow me.
  • Agatha Christie's Tommy and Tuppence book, The Secret Adversary, features Julius Hersheimmer, a millionaire looking for his missing cousin Jane Finn. While he's never met her since his father disowned his sister (Julius' aunt and Jane's mother), he has her picture and falls in love with her. By the end of the book, Jane has been rescued and fallen for Julius in turn.
  • The Villainous Daughter's Butler, I'll Crush the Destruction Flags: This is Princess Fol's dynamic with her cousin Prince Lancelot in the Expansion Pack of the game Cyril was reincarnated into. In the current reality, Lancelot drives away her suitors because he thinks they’re not good enough for her.
  • Wagons West: In one book it is said that Toby and Alexandra are first cousins thrice removed, but considering the known relatives and the age of Alex's father it is likely the author meant third cousins. The only problem anyone has with the relationship is the age difference.
  • War and Peace has this combined with Not Blood Siblings. Sonya is attracted to her cousin Nikolai, who was raised as her brother. Natasha, who is at the time a child, assures her that they can still get married since Nikolai is only her second cousin. As young adults, Sonya and Nikolai get engaged, but Nikolai later breaks it off (with Sonya's consent) after he falls in love with Princess Marya. When they in turn get married, Sonya acts as an Honorary Aunt to their children.
  • In Warrior Cats, seeing as they're semi-realistic cats, and they live in Clans that don't allow intermixing, this is kind of inevitable, and there are several such relationships like this:
    • Squirrelflight and her mate Brambleclaw are second cousins.
    • Hawkwing and Pebbleshine are cousins.
    • Lilyheart and Snowbush are cousins.
  • Rand al'Thor is worried about this when he considers courting the Andoran Daughter-Heir Elayne Trakand in The Wheel of Time after he learns that he is descended from Andoran royalty on his mother's side, making them distant cousins. He is reassured after an expert on genealogy informs him that if they were both commoners, they wouldn't be considered related.
  • Even besides the Not Blood Siblings romance in Wuthering Heights, there are, not coincidentally, two subsequent cousin-cousin relationships.
  • The Year I Met You: Downplayed and ultimately subverted. Jasmine's cousin Kevin, when they are 17 and he's just found out that he's adopted (thus not Jasmine's cousin biologically), tells her he's in love with her and kisses her. He reasons they aren't cousins because they're not genetically related, but Jasmine has known him her entire life as her cousin, and is horrified. But he's still in love with, and pursuing her, 13 years later.
    Matt: [Asking about Kevin] Boyfriend?
    Jasmine: God, no. [But] wants to be.
    Matt: And you don't.
    Jasmine: No.
    Matt: Seems like a nice guy.
    Jasmine: He's my cousin.
    Matt: [Eyes widening] Jesus.
    Jasmine: He was adopted.
    Matt: Oh.
    Jasmine: Still. It is and will always be disgusting to me.

    Live-Action TV 
  • 30 Rock has this when Liz Lemon meets a guy that seems perfect for her. At least, until they go back to his place and she notices a picture of her great aunt. They do the math and figure they are third cousins (i.e. sharing a great-great-grandparent). There's a discussion on how closely related they could be without it being creepy. He says fifth cousins. She says never.
  • In a 3rd Rock from the Sun episode, the aliens went to the family reunion of a family with the last name "Solomon", pretending to be long-lost relatives. Tommy fell in love with his "cousin" and Hilarity Ensued.
  • Arrested Development had a recurring storyline about George-Michael's crush on his cousin Maeby, who are revealed to be first cousins by adoption, then later revealed to be second cousins once removed by blood). Furthermore, when these feelings become mutual, Maeby tries to hide from them by dating a boy from her school, who turns out to also be her cousin. ( Though also first cousins by adoption, then revealed as second cousins once removed by blood.) This was mirrored in two storylines in the final season. The first saw Michael Bluth (played by Jason Bateman) thinking that a prostitute was his long-lost sister and hiring her to work at the company; she thought this was a Pretty Woman situation and started coming on to him. (The prostitute was played by Justine Bateman, who is Jason Bateman's real-life sister.) Then, in the third season finale it was revealed that Lindsay was adopted and was not actually Michael's biological sister. Upon finding out, she decided to act on a crush she had had for years. Then in the fifth season finale it was revealed that Lindsay is Lucille's half-sister. Additionally, Michael ended up going out with a woman who, unbeknownst to him, suffered from mental retardation as a result of her parents being cousins. It was a lot funnier and less creepy than this sounds.
  • In The Big Bang Theory, Howard, while high from marijuana use (It Makes Sense in Context), admits he lost his virginity to his cousin Jeannie at his uncle's funeral. This admission ends up coming back to bite him at the end of the episode in the form of a Mundane Ghost Story. Later, he is quick to point out that she was his second cousin.
  • On Bridezillas, one 'Zilla of the week was a young woman named Sparkela who was engaged to a man much older than she was. Against her wishes, her maid of honor got a stripper for her bachelorette party (the only male stripper in town), who happened to be Sparkela's cousin. Naturally, she tried to resist, but ended up being Forced to Watch her cousin dance for her in a gold singlet and sneakers.
  • Relatively common in Hispanic Soap Operas. During Venezuelan soap Carita Pintada's pre-premiering the author claimed that the main couple could achieve a happy ending with a white wedding and all because they were only third or second cousins, coincidentally the closest blood relation allowed to marry according to actual laws. For the most (emphasis there) part in Latin America, people consider cousin relationships to be too incestuous only if they are first cousins; second cousins and onward are not subject to this taboo.
  • In Chouriki Sentai Ohranger, Kaiser Buldont and Princess Multiwa wed in episode 41 and have a child near the end. It's okay because they're robots.
  • The next to last episode of Community takes place at Garrett's wedding. It isn't until the reception and Jeff's toast that it's discovered Garrett's great-aunt is his bride's grandmother.
    Elroy: Now, this is a man that knows how to marry his cousin!
  • This is not uncommon in Soap Operas in general, given the frequency of "true parentage is revealed" storylines that can make previous non-relatives with crushes on each other into cousins. For example, Cassie DiMera and Shawn Brady on Days of Our Lives. Then there are people who skirt the edges of this trope by dating their half-siblings' cousins on the other side...
  • In the Don't Trust the B---- in Apartment 23 season 2 episode "Original Bitch...", Mark tells June that he left a voicemail on her answering machine. June tells him she didn't get the voicemail because Chloe wouldn't give her the code. The conversation afterwards:
    June: She [Chloe] won't tell me anything she cares about!
    Mark: She might just be a private person. I mean, I was like that when we first met.
    June: The first day we worked together, you told me you boned down on your cousin 'cause you didn't want to go to college a virgin.
  • Downton Abbey: A major plot point is that the Earl of Grantham is without a son. Thanks to Heir Club for Men, his heir must be a distant male-line relative rather than one of his three daughters. The whole family wants Mary—his eldest daughter—to be the heir, but the law doesn't allow it. So if she could marry the heir, it could be an easy solution.
    • Before the show begins, Mary was betrothed—though it's a very half-hearted engagement—to the heir, Patrick, who's her second cousin. Before they can be married, he dies in the Titanic sinking.
    • While Mary only agreed to marry Patrick half-heartedly, it's implied Mary's younger sister Edith was actually super into him, and would've married him very happily if given the chance.
    • After Patrick's death, an even more distant cousin, Matthew, is brought in as the next heir. Mary ends up actually falling in love with him, and they marry. They're fourth cousins.
  • In the HBO series Dream On, Martin and his cousin (played by Helen Slater) briefly undergo a bout of frustrated desire for each other, which only dies when they notice, when they finally get the time and privacy to indulge themselves, that their feet are too similar.
  • Made mention of at least once in The Dukes of Hazzard:
    Bo Duke: Daisy Duke, if you wasn't my cousin, I'd marry you!
    Daisy Duke: Never stopped anybody in this family before.
  • Dynasty: Fallon Carrington and Jeff Colby start up a relationship that ends midway through season 1. Near the end of the season, Alexis Carrington reveals that the mother of him and his sister is the daughter of Thomas Carrington (Fallon's grandfather) making them first cousins. A minor Running Gag, at least in season 2, is to bring this up despite neither knew of their connection until months after the relationship ended.
  • Fallout: In Vault 33, marriage between cousins is prohibited. With its shallow gene pool, however, flings between cousins is common among younger generations and openly discussed. Lucy and Chet are implied to have fooled around and experimented, but never to the point of actual intercourse.
  • The Frasier episode "Beware of Greeks" features a very one-sided version between Niles and Cousin Yvonne, who apparently makes a beeline for him whenever they're at a family gathering.
    Frasier: A distant cousin who has a slight crush on Niles.
    Niles: "A slight crush?" There are cannibals who are less man-hungry.
    • In another episode Woody from Cheers makes a visit to Seattle to attend a wedding where both bride and groom are his cousins, and by extension cousins to each other.
      Niles: I assume they're kissing cousins?
      Woody: Oh, they're doing a lot more than that. That's why they have to get married.
  • In an episode of Friends, Ross and Monica's female cousin comes to visit for the wedding, and ends up staying at Ross' apartment. After a slow-motion Hair Flip, Ross finds he is attracted to her and decides that she is attracted to him too, leading him to try and make a move... Hilarity Ensues.
  • Frontier (2016): During dinner Captain Chesterfield tells Grace that he used to lust after his cousin when she was betrothed to another man. His father marked him with a hot iron after finding out that he sneaked into her bedchambers one time.
  • Game of Thrones:
    • In Season 2, while Jaime is captured by the Starks, Cersei ends up sleeping with her cousin Lancel. While cousin relationships are not uncommon in Westeros, the part that's disturbing is that he's a Replacement Goldfish for Jaime, who is her twin and the great love of her life.
    • Like in the books, Tywin Lannister married his cousin Joanna, who died giving birth to Tyrion. The practical result is that her surname was already "Lannister" even before she married Tywin. In part, this also informs how much of a hypocrite Tywin is. He plans to force all three of his children to marry against their will to secure political alliances, demanding that they put the good of the family above their own personal happiness. Problem is, Tywin himself married for love—and not strategically, since marrying a first cousin meant he didn't secure a marriage alliance with another powerful Great House.
    • Sansa's maternal aunt, Lysa Arryn tells her right after accusing her of sleeping with Littlefinger, that she can marry her son, Robin.
    • Daenerys is actually Jon's biological aunt, but the two are the same age so when they get together it's similar to this. Things are further complicated by the fact that neither knew about their blood relationship at the time. When Jon finds out, he's disturbed and conflicted by the fact. He reveals their relationship to Daenerys, but she's less concerned about the incest than the fact that Jon has a better claim to the Iron Throne than her. Jon's father Rhaegar (Daenerys's much older brother) was the heir to the throne, and any of his legitimate children would come before her in the line of succession, thus threatening Daenerys's claim. Understandably, she's a bit suspicious regarding Jon's revelation as a result.
  • After General Hospital's Alexis tries to sabotage her cousin Stefan's relationship with Katherine, Katherine accuses her of being in love with him, citing the history of Royal Inbreeding. This is actually not the case; Alexis is just carrying on the family tradition of interfering in their loved ones relationships because they don't think that their significant other is good enough for them.
  • On The George Lopez Show, Max gets a major crush on his attractive cousin Veronica. George made jokes about their mutant offspring (since Max by himself is already dyslexic) to discourage that. Veronica milks him for all he's worth by having him do all her chores.
  • In the Gilmore Girls, Lorelai (and later Rory) is horrified to discover that her paternal grandparents were second cousins. Emily doesn't think it's a big deal since that was common among upper-class family in those days.
  • The Glamorous Imperial Concubine: Du Wan and Meng Qi Xing are cousins. That doesn't stop Wan wanting to marry Qi Xing, though she doesn't actually love him and only wants to marry him for his title. And when it looks like he'll marry Fu Ya instead, Wan sleeps with him while he's drunk and makes sure his mother walks in on them the next morning to force the marriage.
  • Jonathan and Tammy were a popular couple on Guiding Light. However, the first time they slept together Tammy had no idea they were cousins and Jonathan was using her for revenge on his mother. When she did find out, she was angry at him for a long time. (About a couple weeks.)
  • House of the Dragon: Very common in the Royal Inbreeding of the Targaryens if Brother–Sister Incest is unavailable.
    • Daemon almost takes his niece Rhaenyra's maidenhood in a pleasure house, and later marries her either out of desire for her, or for the Iron Throne, or to restore the glory of their house, or all of the above.
    • Viserys and his first wife Aemma are first cousins.
    • Rhaenyra is betrothed to her second cousin Laenor. The politically-minded Rhaenyra notes that as far as arranged marriages go, she could do worse than a gay guy she grew up with, and proposes an open marriage.
    • Daemon's second wife is his first cousin once-removed, Laena Velaryon. Her mother, Princess Rhaenys, is one of Daemon's first cousins.
    • Rhaenyra tries to propose a marriage pact to her estranged stepmother and one-time friend Alicent by wedding Rhaenyra's son Jacaerys to Alicent's only daughter Helaena. While they're of a similar age, they are also aunt and nephew.
  • How I Met Your Mother:
    • In a Season 1 episode Ted, Barney, and Robin go to a club. Barney grinds on a girl all night before she turns around and he realizes it's his cousin Leslie.
    • In the first episode of Season 9, Robin and Barney are discussing guests for their wedding when they are appalled to learn that they share a crazy cousin Mitch. In the end they are relieved to learn that Mitch is only related to them by adoption and marriage and thus they aren't related by blood.
  • An episode of Just Shoot Me! involved Nina being pursued by a handsome man who, for some unfathomable reason, she has no attraction to. When he mentions he is also from Colby, Kansas, they discover they are cousins. He's completely disgusted and flees, while Nina is relieved that she hasn't stopped being attracted to men.
  • Justified: When Raylan and Tim question an escaped convict's ex-wife and her cousin, Tim immediately realizes they're sleeping together. Later when the ex-husband arrives:
    Coop: Y'all sleeping together?
    Shirley: We're cousins!
    Coop: Well, from all the lotions, condoms and devices I saw sitting on your nightstand it's clear you're sleeping with somebody.
    Dupree: ...Well it's not like we're first cousins or anything.
  • Wayne and Daryl from Letterkenny try to avert this, though they mention coming close a few times.
  • Married... with Children: Everyone is family in Wanker County, which came as a surprise to Kelly. Apparently, she was a little too "friendly" with one of her relatives; how friendly is unknown, but considering it's Kelly...
  • Mohawk Girls: Bailey is initially dating Thunder in the pilot. She stops, freaking out after learning he's her second cousin.
  • The Nanny had an episode titled "Kissing Cousins" where Fran starts to date a Jewish doctor Bob (played by Jon Stewart) who she thinks is perfect for her. They then meet up at a wedding in their temple, where Fran's mom declares, "Oh, let me get a picture of you and your cousin!" This makes them squick and they stop dating; however, it is mentioned again in later episodes.
  • In Season 6 of New Girl, Jess begins a relationship with Cece’s one-time boyfriend, Robbie. They date for about half the season, until Episode 14, “The Hike”. While out hiking, a rainstorm leads them to take refuge in a cave, during which time they take turns telling childhood stories. Quickly, this goes awry as they realize they both have stories involving the same family reunion, and they figure out that they’re third cousins. Needless to say, they're both very relieved they never did anything more than kissing.
  • Night and Day's Tom Brake and Della Wells go much further than kissing, without realising at the time that they're biological cousins.
  • Riverdale: The big twist in season 1 is that Polly Cooper and Jason Blossom, the Star-Crossed Lovers, are third cousins. They share a pair of great-great-grandparents, as Polly's great-grandfather was a brother of Jason's great-grandfather. The former was born Blossom, but changed his surname to Cooper after a dispute.
  • In a 2018 Saturday Night Live skit, an Irish-American woman appears on an Irish dating show and the man takes an immediate interest in the two other women after learning that they're his cousins.
  • George dated his cousin in an episode of Seinfeld in an attempt to get his parents mad after they started neglecting him.
  • The Sopranos:
    • Little Carmine, the Inadequate Inheritor of the Lupertazzi crime family, is the one-time lover of his second cousin Lorraine Calluzzo, a minor associate. Johnny Sack, the underboss to Carmine Sr., is disgusted by it.
    • Vito Spatafore boasts about "how close" he got with Adriana La Cerva, Christopher's girlfriend, after it seems that she had an affair with Tony behind Christopher's back. Not only is Vito a closeted gay man, but Adriana is also his first cousin; Richie Aprile is both Vito's and Adriana's uncle. Perhaps a result of the writers simply forgetting who was related to who.
  • That '70s Show had an early episode titled "Eric's Hot Cousin", where said tattle-tale Floridian cousin does not look like the last time she visited. She blatantly flirts, causing conflicted feelings in Eric. It turns out to be a trick to get him in trouble as revenge for the last time they butted heads.
    Red: Eric, do I really have to tell you to stop staring at your cousin?
    Eric: [snapping out of his male gaze] What?
    Red: Stop staring at your cousin!
  • In Three Up Two Down, Daphne's ex-husband Jeremy is also her cousin.
  • In To the Manor Born, Audrey's late husband Marton was also her cousin.
  • The Tudors briefly covers the engagement between Mary Tudor and her cousin, Charles V of Spain.
  • Hugo and Alice in The Vicar of Dibley are second cousins once removed, as Alice is the result of a one-night-stand her mother had with a cousin of Hugo's grandfather. Since said relative shared Hugo's father's name, the vicar was extremely relieved to get this clarified.
  • On What Would You Do? (Nickelodeon), Marc Summers invited a teenage boy and a teenage girl to practice kissing.
    Marc: Would you want to kiss her?
    Boy: She's my cousin, why?
    Marc: She's your cousin!? Are you cousins? I didn't know that! Wow! I have something I want to say but this will put us off the air!
  • The White Queen: As in Real Life, the marriages of George of Clarence and Isabel Neville, and later Richard of Gloucester and Anne Neville, are of first cousins once removed. Cecily Neville, the mother of George and Richard, is thus both the mother-in-law and paternal great-aunt of Isabel and Anne.

  • The second verse of Weird Al's Avril Lavigne parody "A Complicated Song" starts with the protagonist singing about how great his girlfriend is, how their personalities are so similar, and how he was thinking about asking her to marry him. The two of them are passionately making out one night, but then...
    Who would have guessed?
    Her family crest
    I'd suddenly spy
    Tattooed on her thigh
    And son of a gun
    It's just like the one on me...
  • Second cousin, why are you so fine?
  • Elvis Presley's song "Kissing Cousins" from the movie of the same name.
  • "Cousin Dupree" by Steely Dan, where the title character hits on his sexy cousin Janine and promptly receives a thorough dressing-down for being creepy and incestuous... which doesn't bother him at all.
    Well, we used to play since we were three / How about a kiss for your Cousin Dupree?
  • Corb Lund's "Family Reunion" has a line that goes like this: "Cuz one of them I think I mighta dated back in school/ That's alright, in Alberta that's cool".
  • Moosebutter has a pastiche of "On My Own" from Les Misérables called "Jon Boy Jon" about a redneck who is in love with his first cousin.
  • The eponymous Brenda in "Brenda's Got a Baby" by Tupac Shakur got involved at the age of 12 with her 20-something cousin and conceived a child, and her parents were too wrapped up in themselves and their drug addictions to care. Her boyfriend/cousin leaves her sometime during the pregnancy, and everything goes to (even further) crap from there. Brenda is thrown out of the house by her mother shortly after she gives birth, and Brenda is ultimately driven to prostitution to support herself (now probably about 13 or 14) and her baby, and eventually killed, presumably by one of her clients.

  • Alfred, Lord Tennyson:
    • Locksley Hall, Amy, who loved and then left the narrator, is his cousin.
    • An interesting twist is found in Lady Clare. The titular earl's daughter is engaged to her cousin, Lord Ronald, much to the delight of her nursemaid… who promptly reveals that Clare is actually her own daughter, whom she substituted for the real Lady Clare, who died in infancy. Ronald, as the next male-line heir, ought to be inheriting everything that Clare's father left to her. Clare, horrified that Ronald would be "kept from his due" and married to a peasant, leaves the castle only to run into a bewildered Ronald. She explains everything, and he shrugs it off and says they'll marry anyway, "and you will still be Lady Clare."

    Religion and Mythology 
  • The Bible:
    • In The Book of Tobit, it's not clear exactly how closely Tobias and Sarah are related, but their marriage is not only allowed but considered obligatory.
      Eat and drink and be merry tonight, for no man is more entitled to marry my daughter Sarah than you, brother. Besides, not even I have the right to give her to anyone but you, because you are my closest relative.
    • Due to the nomadic, tribal lifestyles of the ancient Israelites, this is true throughout the Bible. Abraham sent a servant to find a wife for his son Isaac specifically from among his kin, rather than from among the Canaanites, and he returned with Abraham's great-niece Rebekah. Then Isaac's son Jacob married TWO of his cousins, the sisters Rachel and Leah, and also fathered children by their handmaidens.
    • Also, because in the list of relatives and other people an Israelite man is not allowed to have sexual relations with, "cousin" is conspicuously absent.
  • Classical Mythology:
    • Heracles and Iphicles' mortal parents were cousins. Their father Amphitryon was the son of Perseus and Andromeda's son Alcaeus and their mother Alcmene was the daughter of Perseus and Andromeda's son Electryon.
    • The sisters Helen and Clytemnestra of Sparta married the brothers Menelaus and Agamemnon of Mycenae. The resulting children were double first cousins, and two of them—Helen and Menelaus's daughter Hermione and Clytemnestra and Agamemnon's son Orestes—were eventually married in turn.
    • Happens all the time among the gods, because well, there's not all that many gods. They're pretty much all cousins if not even closer relatives, so all of the relationships are incestuous on one level or another.
  • In Islam:
    • One verse in The Qur'an (4:23) describes in detail which relatives men are forbidden to marry: mothers, daughters, sisters, aunts, nieces, foster mothers, foster sisters, mothers-in-law, daughters-in-law, and stepdaughters unless the men haven't had sex with their mothers. Note that cousins are not mentioned, hence why cousin marriage is permissable in Islam.
    • Muhammad's paternal first cousin Ali was also his son-in-law, because he married Muhammad's daughter Fatimah (i.e. his first cousin once removed).
    • Muhammad's seventh wife, Zaynab bint Jahsh, was his paternal first cousin.

  • In Antigone, the eponymous character is engaged to her cousin Haemon. Haemon's father Creon and Antigone's mother Jocasta are brother and sister. It's worth mentioning that he is also her first cousin once removed since Antigone's father is a son of Jocasta's. Coming from that family, marrying a cousin must've seemed positively conservative. It's also a reference to the Classical Athens law that dictated that brotherless single female heirs would marry a close relative (usually a cousin or an uncle) in order to keep inheritance within the family.
  • Subverted in August: Osage County. Ivy is in a relationship with her cousin Little Charles, which is already considered pretty bad by the others. Then it's revealed that Little Charles is actually the biological son of Beverly, Ivy's father, making the two half-siblings as well.
  • In Brighton Beach Memoirs, Eugene has somewhat of a crush on his cousin Nora. However, it's not romantic so much as that he's entering puberty and there's a beautiful girl in the house. His older brother Stanley has a similar attraction to her.
  • In 1879, Cyrano and Roxanne from Cyrano de Bergerac are cousins. Although they don't actually end up together, their familial connection is never presented as squicky or an obstacle in their relationship. Given Catholic rules on consanguinity, this probably means 'cousin' was more a courtesy than genetic relationship.
  • Elisabeth: like in Real Life, Franz Joseph is expected to marry his cousin Helene, only to fall in love with Helene's sister Elisabeth. It's mentioned that they're cousins, but that isn't treated as the reason their marriage ended as badly as it did.
  • Monty and Phoebe in A Gentleman's Guide to Love and Murder. They're not too closely related though and they didn't meet until they were adults.
  • At the end of The Importance of Being Earnest, The Reveal that frees Jack/Ernest to marry Gwendolen also makes them first cousins. This isn't specifically addressed, but he does start referring to her mother as his aunt, so at least they're aware of it; Gwendolen's mother is rather chagrined to realize that, as Jack is the son of her own beloved sister, she really can't object to the marriage.
  • Tybalt in Romeo et Juliette: De La Haine a l'Amour (though not the play it's based on) wishes this was the case with him and Juliet. In most productions anyway. In Hungary it's less "he wishes his cousin returned his romantic love for her" and more "he's so obsessed with her that he thinks all men, including himself, are unworthy of her". There's still some weirdness going on there, though.

    Video Games 
  • Crawford Starrick and Pearl Attaway are cousins as well as business partners and members of the Templar Order in Assassin's Creed Syndicate. Dialogue between them indicates they have a long history together; having apparently been childhood sweethearts, Crawford once asked Pearl to marry him and was deeply disappointed when she refused his proposal, as well as being clearly grief-stricken after she is assassinated by Jacob Frye (as one of his minions unfortunately learns).
  • BlazBlue: While there are no examples given, the Yayoi family (Tsubaki's family) practices this; they are so obsessed with blood purity that marrying in the family is the only choice they get. This has led to the family being Royally Screwed Up; Tsubaki's the only surviving heir to the family.
  • In Bully, the Preppies are the kids of a bunch of inbred rich people. When Gary gets them to attack you with his old trick of insulting them and saying you did it, the "inbred" insult is met with indignation and the phrase "And first cousins is legal anyway!"
  • Generally unavoidable in Crusader Kings if you want to keep a marriage alliance alive for more than one generation. The game notably doesn't track any relationship closer than first cousins: relatives any more distant than that are grouped as "kinsmen".
  • Danganronpa Another Episode: Ultra Despair Girls: One of the characters targeted by the Warriors of Hope is Kanon Nakajima, Leon Kuwata's cousin who had an unhealthy romantic interest in him which went completely unreciprocated.
  • An ill-fated romance between two forms part of the plot of the adventure game The Dark Eye.
  • Dorian Pavus and a human Inquisitor in Dragon Age: Inquisition are distantly related. Dorian brings this up at one point, and if a male Inquisitor is engaged in a romance with him he has the option of asking whether it's okay to continue flirting or not. Dorian's fine with it, as it's very distant (three whole Ages, if he's being literal).
  • In The Elder Scrolls series, the Altmer (High Elves) have a very endogamous society, believing that they can trace their ancestry back through the Aldmer, to the Ehlnofey, and through them, even to the et'Ada who created the mortal world. As such, they intermarry and heavily restrict visitors to their homeland to keep their genetics pure, to the point where they even cull children with "undesirable" traits. While their pure bloodline gives them highest natural magical aptitude of any race, it is theorized that the innate weakness to magicka they suffer is a result of this inbreeding.
  • Though nothing ever comes of it, Brother in Final Fantasy X-2 has a noticeable (and one-sided) crush on Yuna. Brother's father and Yuna's mother were siblings.
  • As an extension for its love of the sibling version Fire Emblem has plenty of this:
    • Several preexisting relationships in Fire Emblem: Genealogy of the Holy War's 2nd generation take on this form, and by selective pairing of characters in the first generation it is possible to make a vast number of such pairings. Two particularly noteworthy examples in the second generation are the predestined couples of Lana/Faval and Lester/Patty. Because their mothers Aideen and Briggid were identical twins, Intelligent Systems pulled off the impressive feat of doing this and Brother–Sister Incest at the same time.
    • It is possible to make Roy and Lilina from Fire Emblem: The Binding Blade cousins... by pairing Eliwood with the Pegasus Knight Fiora and Hector with either of Fiora's youngest sisters Florina or Farina in prequel Fire Emblem: The Blazing Blade. Since The Blazing Blade was not released yet at the time of The Binding Blade's own release (and the pairings involved exist among other possible pairings), the latter never makes any mention of this possibility.
    • Fire Emblem: Awakening uses a love system very similar to that of Genealogy of the Holy War. Either Lucina or a Chrom-fathered Cynthia or Kjelle can potentially marry their paternal cross-cousin Owain while other cousin pairings can be set up with certain combinations of parents. The international release has the status screens of such a pairing Bowdlerised to read "Companion" instead of husband/wife, though. A female Morgan mothered by Lissa or Emmeryn can also marry her cousin Inigo or Brady.
    • Fire Emblem Fates allows the players to do something similar to Fire Emblem: Awakening if they have the children of siblings marry. There are also two "set" pairs of cousins in the game, one of which can avert this or not, one of which plays it straight.
      • The first set are Asugi, the son of the Ninja Saizo, and Midori, the daughter of Saizo's younger brother Kaze. However, while they can reach an S-support, in the localization it ends with them as Just Friends, making them either an aversion or a straight example depending on the version itself.
      • The second set are the Male Avatar and his Implied Love Interest Azura—their mothers Mikoto and Arete were sisters. The twist is they don't know they're cousins, and they don't find out until quite late in the Golden Path—a mere 3 chapters from Final Boss which is more than late enough for the player to easily have S-supported Corrin and Azura (and note, only the Golden Path, meaning in the other two they never find out). Even after they learn the truth, though, their S-support is explicitly romantic, making them the straight example. Of course, if they don't marry each other, it's possible for their respective children, who would be second cousins, to marry each other. And if the Avatar marries any of Azura's children, he/she'll end up marrying his/her first cousin once removed.
      • It's also possible to pull off other couples like this depending on how the player pairs up the royal sisters. If Hinoka, Sakura, Camilla, or Elise marry any of the men who have daughters, the player can then hook these second-gen girls up with Shiro or Kiragi (for Hinoka and Sakura), or Siegbert or Forrest (for Camilla and Elise). For example, a Caeldori mothered by Hinoka is still perfectly capable of marrying her cousin Shiro.
  • In Jade Empire, it's revealed that Dawn Star is the long-lost daughter of Sun Li, the brother of the Emperor. As a result, if a male protagonist forms a ménage à trois with the Princess Silk Fox and Dawn Star, the two ladies are in this kind of relationship.
  • It's only seen in the background novel The Masked Empire, but Grand Duke Gaspard attempted to invoke this trope with his cousin, Empress Celene, as a last-ditch effort to take the throne of Orlais peacefully. When she refused him, he declared war, which is going on at the time of the game. In turn, Celene's immediate predecessor, Florian, was rumored to be romantically involved with his cousin Meghran, which is why the latter was assigned as Ferelden's regent before King Maric overthrew him. Only the part about Florian and Meghran being cousins was considered scandelous; no one cared that they were both men.
  • In Matches and Matrimony, this is one of the nine paths which the player character can take, if she accepts (or is too weak-willed to refuse) the proposal of her cousin Mr. Collins.
  • It should be noted that in The Sims 2 and The Sims 3, the game does not even allow the option for first cousins to be married. (A certain cheat will allow them to have offspring if the player so chooses). However, more distantly related Sims have the ability to seek romantic interactions with one another (probably because the family tree in the game does not recognize first cousins once removed and beyond, or great-grandparents for that matter).
  • Pathfinder: Wrath of the Righteous: One room in Areelu's Laboratory briefly entraps the party members in illusions of their deep desires. Much to Daeran's annoyance, his consists of a sexual fantasy of himself with his cousin Queen Galfrey. He irritatedly explains to the Player Character that it was just a childhood Precocious Crush that he never seriously pursued: as much of a hedonist as he is, as an adult he doesn't particularly like her.
  • At the end of Persona 4, The Protagonist's little cousin Nanako tells him that she wants to marry him when she grows up, and apparently won't take "no" for an answer. If the player didn't max the link, her father won't allow it. If it's done, Dojima's gonna hold the Protagonist to it.
  • Soul Calibur VI provides deeper backstory to Hilde (Princess Hildegard von Krone) in her Soul Chronicle, revealing that her father (the king) and his brother had pledged their children the cousins Hilde and Wilhelm to each other. The pair grew up as friends, rivals, and battlefield allies, and their bond was more tested by the King's descent into madness than by any taboo about Royal Inbreeding.
  • In Unicorn Overlord, Alain and his cousin Virginia will end up as a couple if you gave the latter the Ring of the Maiden.
  • Bart and Margie of Xenogears are first cousins and engaged for various political/dynastic reasons. Although Bart rescues her from kidnappers at one point and they do have genuine affection for each other, neither one seems to be very enthusiastic about the prospect of marriage.

    Visual Novels 
  • One of the routes in the Aoi Shiro pairs the main character up with her cousin Kaya. Demon Vampire Lesbian Kissing Cousins?
  • Saki from Snow Sakura is a slight deconstruction. She and her cousin Yuugi fall in love but their school's vice-principal decides to butt in because their relationship isn't socially accepted. This causes drama as the two are forced to be apart. It helps that the vice-principal is depicted as a Jerkass strawman while the pairing is supported by an American teacher and their parents.
  • Sono Hanabira Ni Kuchizuke Wo: Sara and Kaede; they (at time of writing) supply the Trope Image for Yuri Genre.
  • Miyuki Takamachi of Triangle Heart 3: Sweet Songs Forever. Both her status as Kyouya's cousin and potential love interest may or may not still be present in Magical Girl Lyrical Nanoha, as one shot in the first season showed signs of her getting jealous when she heard that Kyouya was going to visit his girlfriend, Shinobu.
  • The entire Nanaya clan from Tsukihime, with the exception of Shiki due to his situation. They only breed within the clan to sustain and increase the psychic power within their bloodline.
  • While he's joking for the most part, Umineko: When They Cry's Battler Ushiromiya is not averse to playing grab-ass with his first cousin Jessica. As for more serious cousin-cousin relationships, the second half of the story reveals that Sayo Yasuda (who is implied and later confirmed to be Shannon, Kanon, and Beatrice) is involved with as many as three of his/her cousins. Who are also his/her niece/nephews (since Kinzō is both Sayo's father and grandfather). As it turns out, this is a large part of Sayo's issues, since finding out that s/he's actually related to his/her love interests makes him/her think of him/herself as disgusting and no better than Kinzo.
  • Sayaka from Yoake Mae Yori Ruriiro Na, although the protagonist treats her like and refers to her as his sister.

  • Between Failures offers a rather touching scene in which Reggie, not generally the most likable character in the cast, tells the story of “his first time” for a club initiation. The occasion proves to be a family wedding, the girl a cousin; his story is discreet to the point of allusion, and he dismisses accusations of “lack of detail” with an aloof put-down.
  • Referred to in Dead Days. Brown-hair claimed he knew everything, so Blondie tested him out. Brown then stated Blondie's first kiss was with a cousin at a family reunion. His name was Steve.
  • Tedd of El Goonish Shive averts this trope, being almost allergic to the idea of his "ugly cousin" Nanase as a sexual being at all. (Said cousin is, of course, scorchingly hot actually, as Tedd admits much later.)
  • Spoofed in Hark! A Vagrant: Edward the Black Prince wishes to marry his cousin, but is unable because he needs to make an advantageous marriage. His father, Edward III, notes that it's natural to want to marry one's cousin but the realm comes first.note 
    Edward III: God, the cousins I could have, but no...
  • Rudy and Fiona in Kevin & Kell are technically first cousins, but only by marriage (two marriages actually) and through Fiona's stepparents both times, so it's okay.
  • The webcomic Lines and Stripes has a couple like this, but the objection of people isn't so much that they're cousins, but that they're double cousins. The other wiki has an explanation as to why this is a bad idea.
  • Sandra on the Rocks: Eloise has a romantic thing for her cousin — perfectly legal in France, where they live, but close enough to make her uncomfortable about declaring it. On the other hand, when Nadine teases her about the subject, it gives her an excuse to declare that "FORBIDDEN LOVE IS HOT!!!"
  • In Scandinavia and the World, Norway and his cousin, Jan Mayen, actually get in trouble for being in a relationship, resulting in the latter's execution.
  • In Templar Arizona, Mose's grandfather wants him to "keep the bloodline pure" and tries to browbeat him into taking up with the temple dancers. Mose objects on the grounds that they're his cousins ... and underage.
  • Trigger Star: Sauerkraut and Avocado's idol, Exlax The Mighty. Not only are they cousins, but they were also lovers.

    Web Original 
  • HomeSchooled: Juan the gardener has an infatuation with Dulce the housekeeper, despite the fact that they're second cousins. This disgusts her to no end.
  • Of course, considering the fact that Epic Rap Battles of History also has real-life historical figures as some of their many characters, there's bound to be at least a few lines about them having a relationship with their cousin.
  • Revenge Films: Hiroshi has an infatuation with his cousin Takako ever since she was a child. He tried to assault her as a high schooler when he got frustrated that he couldn't have her, but her mother was able to stop him. He was arrested but was given a suspended sentence due to his mental disability.

    Western Animation 
  • On The Angry Beavers, the episode "Stump's Family Reunion" has Dagget trying to help Stump hook up with his distant cousin Vanity. Norbert was there too and intended to help (because he thought Dagget would screw up), but his help is spotty as he had an ear infection and acted goofier than his brother usually did.
  • In the Big Mouth episode "Florida", Andrew finds himself strongly attracted to his cousin Cherry, who reciprocates. Nick repeatedly points out how icky this situation is.
    Nick: Your dads are brothers! When you talk about Grandma, you're talking about the same person!
  • When Hervé and Nicolas follow the gang to the factory in an episode of Code Lyoko, Odd and Aelita pretend to have sneaked out of school on a date, despite the fact that Aelita joined the school under the pretense of being Odd's first cousin. Note that it works as a perfect in-universe Fridge Brilliance: it was Fake-Out Make-Out, but Hervé and Nicolas probably reads it: "They are kissing? But... They are cousins! Oh... No wonder they are hiding." Notably, when Hervé report the fact to Sissi, she obviously doesn't believe him and finds the concept absurd.
  • In the "Whittle Me This" episode of The Fairly OddParents!, Timmy mentions that hillbillies are cool due to several reasons, including that they can take their cousins to the prom.
  • He-Man and the Masters of the Universe (1983): In "Creatures From the Tar Swamp", Prince Adam's cousin Lady Edwina is struck by how big and handsome he has become since they last met. She tries to flirt with him, and though he ignores it, it doesn't stop Teela from glaring.
  • King of the Hill had an episode where Bill visited his family in New Orleans, only for his beautiful relatives Lily, Rose, and Violetta to start throwing themselves at him. He knows that one is his blood cousin while the others are his male cousins' widows, but doesn't know which is which. When the girls' feuding erupts into a straight-up Cat Fight, their flamboyant cousin Gilbert interrupts to reveal that Violetta is the blood relative. When the Hills return to pick Bill up, Peggy asks how his weekend was and he cheerfully declares "Both of 'em!"
  • Lilo & Stitch franchise: Jumba's experiments consider themselves to be cousins, but some of them are romantically involved. This is most evident with Stitch and Angel, but there also is Ship Tease between Yin and Yang in their debut episode of The Series and between Bonnie and Clyde in Leroy & Stitch.note 
  • In Monster Buster Club, Cathy's big secret is that she kissed her cousin Elton, but only on the cheek, and only on a dare.
  • On Oggy and the Cockroaches, Jack, Oggy's cousin, is attracted (and has the feeling reciprocated) to Monica, Oggy's twin sister. One episode has them married with an infant daughter.
  • The Oz Kids: In this continuity, Dorothy Gale grew up and married her distant cousin Zebediah "Zeb" Hugson (from Dorothy and the Wizard in Oz), and the pair had two children, Dot and Neddie Hugson.
  • Scooby-Doo and his cousin Scooby-Dum were attracted to one of their cousins, Scooby-Dee. It's less Squicky since they're dogs, and inbreeding is common.
  • The Simpsons:
    • Apparently the motivation for the founding of Shelbyville was a disagreement between Jebediah Springfield and Shelbyville Manhattan over whether to legalize cousin marriage. At one point Bart escapes a bunch of Shelbyville kids by pointing and shouting "Look! Somebody's attractive cousin!"
      Jebediah Springfield: Why would we wanna marry our cousins?
      Shelbyville Manhattan: Cause they're so attractive. (confused) I— I thought that was the whole point of this journey!
    • Luann, Kirk and Milhouse all look so similar that Bart once asked Luann and Kirk if they are siblings. In the season 26 episode "Let's Go Fly a Coot", Milhouse tells Bart that his parents are actually cousins. They were born in Shelbyville and this follows Shelbyville custom, as the town was founded by early dissenting Springfielders who wanted to inbreed.
    • The Simpsons Uncensored Family Album has Homer Simpson's detailed family tree depicting second cousins Amos Graycomb and Moselle Stemple marrying and having four children together.
  • In the Swedish/British cartoon The Three Friends... and Jerry all the main characters are after blonde, very developed Linda, even her cousin Frank. Especially her cousin Frank.
  • Invoked in an episode of Totally Spies!. When looking up her relatives in France, Alex wonders what her cousins look like and pictures a handsome guy with Bishie Sparkle.
  • Wolverine and the X-Men (2009) made Silver Samurai and Mariko Yashida into husband and wife, even though they're cousins in the comics. It's not mentioned one way or another if they're still related in the cartoon. Justified as they're Japanese and it fits their culture.