Line #143 Main/HeirInLaw


1	->'''Paul:''' And the Emperor has no sons, and his daughters are yet to marry.\
2	'''Liet-Kynes:''' You'd make a play for the throne?
3	-->-- ''Film/Dune2021''
4
5	Sometimes, [[BlueBlood royal title]] in a [[HeirClubForMen male-favouring system]] can't be inherited by a king's daughter, but ''can'' be inherited by the man who marries her. The throne can be passed on ''via'' a princess, but not solely to her. She'll instead be placed somewhere on a scale of royal wives--if she's lucky, perhaps as [[RulingCouple co-ruler]], but if she's not, perhaps just as a convenient tool who [[YouHaveOutlivedYourUsefulness ceases to be useful]] as soon as the marriage goes through. In some cases, this is even retroactive: a woman who has ''already'' inherited will be demoted to consort if she later marries.
6
7	This can be involved in a number of plots.
8	* The princess in question is even more likely than usual to be subject to ArrangedMarriage and AltarDiplomacy. Good luck being allowed to MarryForLove when your choice will determine the future ruler of the kingdom.
9	* {{Social Climber}}s and other ambitious people will CompeteForTheMaidensHand, possibly through an EngagementChallenge (or by winning a StandardHeroReward, since the princess who is usually included may come packaged with a ticket to inherit).
10	* The more villainous suitors may tell the princess that [[AndNowYouMustMarryMe Now You Must Marry Me]], like it or not. This can work even if the villain has already taken over the kingdom, because TheUsurper may gain legitimacy by marrying the previous king's heir.
11	* Alternatively, a villain may simply want a princess dead so that her potential nuptials can't cause a PassedOverInheritance or turn someone into a [[RightfulKingReturns Returning Rightful King]].
12	* If the marriage greatly changes the financial situation of one of the parties, things like NobilityMarriesMoney and RagsToRoyalty may be in play. Money, not the throne, might be someone's main motive--people may see a princess as a MealTicket, or an ImpoverishedPatrician may trade on lineage to achieve success as a GoldDigger.
13	* Princesses who don't know that they're princesses can still be subject to this, so when people get a ReallyRoyaltyReveal, it may coincide with learning that someone wants them married/dead because of this trope.
14
15	Similar things occur with royal widows. Another variant is when instead of the husband claiming the throne directly, he becomes regent to a son who he [[ChosenConceptionPartner produced with his chosen princess]] for that purpose. A downplayed version is where the husband isn't actually going to inherit anything through the marriage but thinks lineage makes for a good TrophyWife.
16
17	----
18	!!Examples:
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20	[[foldercontrol]]
21
22	[[folder:Anime & Manga]]
23	* ''Manga/{{Berserk}}'': The king of Midland has only one child, Princess Charlotte, and whoever marries her will become the king's heir. Griffith, an ambitious commoner who hopes to get a kingdom of his own, works hard to impress the king with repeated victories in battle, while at the same time using all his charm to sweep the [[TheIngenue naive]] princess off her feet. Since Charlotte is not yet engaged the king's brother Count Julius and Julius's son Adonis are actually second and third in line, [[spoiler:but Griffith manages to eliminate them after Julius's unsuccessful attempt on Griffith's life]]. After winning the hundred-year war for Midland, [[spoiler:Griffith blows his chance when he has a FreakOut over Guts leaving the band of the Hawk, and gets himself imprisoned and tortured by the king for deflowering Charlotte. Charlotte helps Griffith's followers to spring him out of prison, and has no choice but to say goodbye.]] Then come the Millennium Falcon Arc, [[spoiler:Emperor Ganishka invades Midland and intends to legitimize his conquest by forcing Charlotte to bear his children. Griffith miraculously returns to rescue Charlotte and all of Midland, with them being none the wiser about the DealWithTheDevil Griffith made in the Eclipse. Now a VillainWithGoodPublicity, Griffith is once again set to marry Charlotte and make his kingship official]].
24	* GenderInverted in ''Anime/DogDays''. Clarifier declared her best friend Adelaide to be her successor as the ruler of Pastillage shortly before her death instead of her younger brother Valério. Admittedly, it's never definitively stated that Adelaide and Valério are a married couple, but it is very heavily implied.
25	* In ''Manga/DrStone'', the position of Village Chief is gained by winning a fighting tournament and then marrying the Village Priestess, who is always the daughter of the chief and previous priestess. This is important in the early part of the manga, as the strongest warrior in the village, Magma, is a {{Jerkass}} who doesn't care for the current priestess, Ruri and just wanted the throne. This motivates the various members of the Kingdom of Science, most of whom are close to Ruri, to join the tournament in order to save her. [[spoiler: In the end, Senku wins but immediately divorces her, both for the sake of Chrome, who he knows loves her, and because [[CelibateHero he doesn't want to be married]], though he still becomes village chief after curing her pneumonia.]]
26	* ''Manga/OnePiece'':
27	** Sterry, Sabo's adopted younger brother, became king of Goa Kingdom via marrying the kingdom's princess, Sarie Nantokanette, and then inheriting the throne after her father and brother mysteriously died. It's heavily implied Sterry killed his in-laws to get to the throne. Since we never see them in their kingdom, it's unknown whether Sterry does all the ruling or whether he and Sarie share power.
28	** Sabo's biological parents and Sterry's adoptive parents meant for Sabo to marry Sarie Nantokanette, however Sabo's rebellious streak and apparent death nixed those plans, so they invested in adopting a higher-ranking noble child.
29	* ''Manga/RanmaOneHalf'':
30	** Because Tendo Soun has only three daughters and no sons, there is a danger that his fine dojo will become nothing more than a legacy holding to his sons-in-law. This is his principal reason for advocating the courtship of his youngest daughter Akane to his old friend's son, Saotome Ranma: Ranma is an accomplished martial artist who would have a keen interest in keeping a thriving dojo.
31	** It's common {{fanon}} that Cologne is so interested in having Ranma agree to honor his AccidentalMarriage to her great-granddaughter Shampoo because she believes Ranma would make an excellent heir to her own family style.
32	* ''Manga/{{Shigurui}}'':
33	** Iwamoto Kogan, founder of the fearsome Kogan-Ryu style of swordsmanship, is ever more obsessed with securing the future of his school. Much to his frustration, his only child Mie is a girl. Therefore he makes his two best students, Irako Seigen and Fujiki Gennosuke, compete for the honor of marrying Mie and inheriting the dojo. While Gennosuke genuinely admires Mie and wants to serve his master, Irako is deceitful and wants it all for himself.
34	** OldMaster Ichidensai Funaki didn't use to have any problem with the succession of his dojo, since he had twin sons to carry on his style, but when they are slain by Gennosuke and Irako on orders from Kogan, Ichidensai is left only with his daughter Chika. Chika is in fact a {{Ladette}} ActionGirl whose skill is mightier than any of her father's remaining male students, but tradition still requires that her father pick a husband for her and make ''him'' the heir to the dojo. As the EngagementChallenge, Ichidensai holds a "Helmet-Throwing" contest to see which student can best cut through a thrown helmet in midair. This plan runs into some snags: one is that Chika has some intersex genitalia that she doesn't want anyone to know about, leading to apprehension about her wedding night. The other is that she's got a {{Yandere}} stalker in the grotesque, toad-like ex-student Gannosuke, who starts murdering each new husband Chika gets before they can even consummate the marriage.
35	* In the manga of ''Anime/TheVisionOfEscaflowne'', the king of Asturia has three daughters and no sons. The eldest, Marlene, is deceased and the second, Eries, refuses to marry. As such, the throne is expected to pass to the husband of the third princess, Millerna, who is currently unmarried. Oddly enough, the eldest princess was actually married with a son before her death but neither of them seems to be considered for the throne, presumably because she married the ruler of another country.
36	[[/folder]]
37
38	[[folder:Comic Books]]
39	* ''ComicBook/{{Batman}}'': Ra's al Ghul has tried to offer heirship to his criminal empire to both Batman and Bane by way of marriage to his daughter Talia, mostly due to him [[HeirClubForMen finding her a poor heir to him due to her gender]]. It didn't work out in either case.
40	[[/folder]]
41
42	[[folder:Fan Works]]
43	* Gender-inverted version in ''[[https://archiveofourown.org/works/21339784/ She Can't Head the Family Business If She's Not Family]]'', in which fashion mogul Gabriel Agreste has deemed his son Adrien unsuitable to inherit his company, but Marinette Dupain-Cheng, one of his classmates who likes him, has all the qualifications he needs--only she's started to fall for guitarist Luka Couffeine instead, and if she doesn't get together with Adrien, Gabriel will have trouble finding a reason to make her his apprentice and heiress. As a result, he ends up turning his efforts (both as Gabriel and as the supervillain Hawkmoth) towards making sure Adrien and Marinette end up together.
44	* Discussed in ''Fanfic/ASongOfIceFireAndHeart'' when King Robert Baratheon decides to name his daughter Myrcella his successor and the future Queen on the Iron Throne. When his friend Ned points out the Westerosi lords will expect her betrothed Roxas to rule in her stead, Robert is fully aware of the teenager's distaste for the trappings of royalty and admits Myrcella will likely care for the administrative part -- the bulk of day-to-day ruling -- while Roxas will happily hunt monsters and outlaws, thus focusing on the "protector of the Realm" part.
45	[[/folder]]
46
47	[[folder:Films -- Animation]]
48	* In Disney's ''WesternAnimation/{{Aladdin}}'', this is Jafar's (the EvilChancellor) Plan B after failing to get the magic lamp. By using his magic on the Sultan, he plans to secure a marriage to Princess Jasmine, the Sultan's daughter, and gain the throne through his marriage to her. It doesn't seem that he intends for his new wife to live long after his ascension.
49	-->'''Iago''': You marry the princess, all right? [...] Then you become the sultan! [...] And then, we drop papa-in-law and the little woman off a cliff.
50	* This is the driving force of ''Film/{{Enchanted}}'', Queen Nerissa wants to stop her stepson, Prince Edward from marrying Giselle for fear of losing the throne to them. Though Edward would presumably be the actual ruler, Nerissa focuses all her attention on Giselle and throws all her accusations of her throne being stolen at Giselle, not Edward.
51	* ''Franchise/{{Shrek}}'':
52	** In ''WesternAnimation/Shrek1'', Lord Farquaad wanted to marry Princess Fiona solely because it would make him a king. When he discovers Fiona's curse, he plans to keep her locked away and never be seen again. Unfortunately for him, his reign doesn't last too long before he becomes dragon food.
53	** It is later revealed in ''WesternAnimation/Shrek2'': Charming and Fiona had been betrothed so that Charming could become king. [[spoiler: This was to repay his mother, the Fairy Godmother, for turning her father into a human so he could be with Fiona's mother]]. This fails as Fiona had fallen in love with Shrek and married him instead.
54	** Comes up again in ''WesternAnimation/ShrekTheThird'': [[spoiler: after King Harold dies]], Shrek goes to find Fiona's cousin, Arthur, so he can ''avoid'' this trope, as he doesn't want to be stuck with royal duties. Apparently, the idea of Fiona just ruling alone never crosses anybody's mind.
55	** Supplementary material reveals Harold was this; he inherited the throne by marrying Lillian, whose father was the previous king of Far Far Away.
56	* In ''WesternAnimation/TheSwanPrincess,'' Rothbart's motive for cursing Odette is blackmailing her into marrying him. This is his backup plan after he failed to take over the kingdom by force [[EvilSorcerer with his magic]], saying that if he's the ''legitimate'' king he won't have to spend his life defending the position. ([[FridgeLogic Because nobody will object to an exiled criminal suddenly marrying the recently-orphaned princess?]])
57	[[/folder]]
58
59	[[folder:Films -- Live-Action]]
60	* In ''Film/Aladdin2019'', Jasmine is constantly refusing suitors because she wants to avert this trope and rule as Sultana in her own right, much to the displeasure of male politicians who want her to StayInTheKitchen. [[spoiler:Jafar later tries to invoke this by blackmailing Jasmine into marrying him to legitimize his overthrow of her father. In the end, Jasmine gets her wish when her father abdicates and lets the succession devolve upon her, at which point she takes Aladdin as her consort.]]
61	* In ''Film/CurseOfTheGoldenFlower'', the Emperor is heavily implied to be this. He was a brilliant and recently widowed general who appeared to marry the previous emperor's only daughter, the now Empress. [[spoiler: But he had to get rid of his beloved first wife to do so]].
62	* ''Film/DunePartTwo'': [[spoiler: In the first film Paul muses that Shaddam has no male heirs, so whoever marries Irulan (or one of her sisters) will be the next Emperor, rather than Irulan ruling in her own right. At the end of the movie, Irulan accepts to become Paul's wife in exchange for her father's life.]]
63	* Creator/TerryGilliam's film version of ''Literature/{{Jabberwocky}}'' has Dennis given this as his StandardHeroReward, although he doesn't actually want it. He has an UnrequitedLove for his peasant neighbour Griselda, who is generally unpleasant to him.
64	* In ''Film/{{Maleficent}}'', Stephan becomes king by marrying the former king's daughter. She doesn't rule and barely even has a presence in the story.
65	[[/folder]]
66
67	[[folder:Literature]]
68	* ''The Bishop's Heir'' (one of the ''Literature/{{Deryni}}'' books) features a king who, troubled by rebellion in one of the territories he rules, tries to resolve it by marrying the heir of its former rulers (whether she wants it or not). It doesn't really go according to plan. Somewhat unusual for this kind of story, the person insisting on the marriage is the protagonist.
69	* ''Literature/ABrothersPrice'' contains a [[GenderFlip gender-flipped]] version, owing to the setting's GenderRarityValue. Society is matriarchal, but a father with royal blood confers status, and the protagonist is kidnapped to be such.
70	* The ''Literature/ChildrenOfTheBlackSun'' trilogy features confusion between a culture where this can happen and one where it can't. Mira is the daughter of a clan chief, and a Mesentreian noble thinks that bargaining with the clan to marry her is the same thing as securing eventual rulership for himself. Ricalani clans don't actually work like that, and all he'd get out of the marriage is Mira herself, but unfortunately for Mira, her clan is quite happy to take advantage of his misunderstanding and strike a deal.
71	* ''Literature/TheChroniclesOfDorsa'': This is mentioned as one option for Emperor Andreth-his future son-in-law could become his heir. However, he ends up instead making his daughter heir. That's because making his son-in-law heir would entail his adoption into House Dorsa as a full son. Since Princess Tasia, his daughter, has been targeted for assassination, they risk adopting a man who's involved with the plot. [[spoiler:Tasia later lets her husband Mace take the throne after she's believed dead.]]
72	* ''Literature/TheCourtshipOfPrincessLeia'': This is {{gender flip}}ped from the usual examples. A man [[{{Matriarchy}} cannot inherit]] the throne of Hapes personally, but his wife becomes Queen. Prince Isolder thus comments how in a way he has ultimate power due to this, as it's his choice who succeeds his mother. Leia internally dismisses this as a rationalization.
73	* The ''Literature/{{Deverry}}'' books feature a case where, upon the death of a king, his three mutually antagonistic sons-in-law make bids for power. They stop short of proclaiming themselves kings but do advance claims to be regent for the "rightful" king, their own respective sons (the old king's grandsons). A son of the eldest daughter ''should'' have inherited, and might have if her husband's clan were better politicians.
74	* ''Literature/{{Dune}}'': The Bene Gesserit's initial plan was to ensure the current Emperor only had daughters[[note]]they are capable of controlling the sex of their offspring[[/note]], and then marry one of them to the Kwisatch Haderach, TheChosenOne and end product of their millennia-long breeding program, so they could have control over the throne. When events result in the Kwisatch Haderach -- now Paul -- being born a generation early, Paul hijacks the plan, marries the Emperor's daughter, and becomes Emperor himself, to their great dismay.
75	* ''Literature/EndoAndKobayashiLive The Latest on Tsundere Villainess Lieselotte'': Originally, this is what Marquis Bruno Riefenstahl plans for his distant nephew Baldur that Baldur will inherit the marquessate from Bruno, conditioned on Baldur marrying one of Bruno's several daughters. However, since it's revealed [[spoiler:Fiene is the illegitimate and only child of Bruno's older brother]], she was named the heir to the position of the head of the Riefenstahl household, but the position of the marquis will fall to her husband.
76	* ''Literature/{{Everland}}'': In ''Ozland'', part of Katt's plan to become Queen of Germany involves marrying Prince Jack, as she knows the populace won't accept her, a foreigner, as ruler otherwise.
77	* This is the plan in ''Literature/TheHorseAndHisBoy''. A Calormene prince wants to marry Queen Susan of Narnia so he'll be able to take over the country. That he has the hots for her doesn't hurt.
78	* [[PlayingWithATrope Played with]] several times in ''Literature/HowARealistHeroRebuiltTheKingdom'':
79	** Before the story starts, Albert becomes king of Elfrieden because he married the [[SuccessionCrisis only surviving member of the royal family]]. His wife, Elisha, could take the throne, but the royal family is so controversial that putting someone else on the throne is safest.
80	** Souma is given the throne directly by Albert, but he is still engaged to Liscia, the princess, to give the abdication more legitimacy. Souma later also takes over Amidonia and again gets legitimacy by marrying Roroa, princess of that country, after she overthrew her brother Julius in a coup.
81	** After being driven out of his country, Julius Amidonia marries the princess of the Kingdom of Lastania, and he's set to become the next king rather than Tia Lastania taking the throne. It's unclear if this is because the monarch has to be male or if Tia just doesn't want to rule.
82	* This is [[spoiler:initially]] the case for Princess Yumina Urnea Belfast in ''Literature/InAnotherWorldWithMySmartphone''. (A male cousin would've been higher in the line of succession, but Yumina only had a single female cousin.) As such, her parents are eager to push her into an ArrangedMarriage with main protagonist Mochizuki Touya after he foils an assassination plot on the King's life (and passes a SecretTestOfCharacter via Yumina's [[MagicEye Mystical Eyes]]). Touya is initially hesitant about marrying Yumina, but she eventually grows on him ([[MarryThemAll as do his other eventual fiancées]]), but he has no interest in ruling the Kingdom of Belfast. [[spoiler:Later in the light novels, this last point is subverted twice, as the King and Queen of Belfast eventually have a son to take over as the Crown Prince, while Touya himself becomes the ruler of a small Duchy that's established for him.]]
83	* In Sean Russell's ''Literature/TheInitiateBrother'', Nishima is not only the most visible heir to the previous imperial dynasty, she's the ward of a powerful lord who is not on good terms with the current one. As such, she's an obvious focus for discontent, and the general assumption is that whoever marries her will be put forward as a challenger to the Emperor with her lineage as an excuse. By the end of the story, however, Nishima has actually become Empress in her own right, unmarried.
84	* The entire plot of ''Literature/KingdomRiver'' is driven by this.
85	** Queen Joan of the Middle Kingdom has only one child, Princess Rachel, who is more interested in books and learning than ruling a kingdom. Because of this, various River lords want to marry her to get to the throne. Joan wants to find a son-in-law who will be strong enough to hold the throne and keep the lords in check, but who's also patient enough to wait for the throne, rather than kill her to get to it immediately and who will actually care about her daughter, rather than kill or abandon her once they have the throne. For this reason, she reluctantly allies with the protagonist Sam Monroe, Captain-General of North Mexico, against their common enemy, Toghrul Khan, hoping he'll fulfill that need. [[spoiler: the book ends with Sam marrying Rachel and becoming king after Joan dies in battle.]]
86	** Queen Joan was this herself; originally queen consort, after her husband, King Newton, died, she became the reigning queen due to Rachel being a baby at the time. Unlike Rachel, she actually wanted to rule and made a point of killing off a few enemies at the start of her reign to show people she meant business.
87	* In ''Literature/KingsQuestTheFloatingCastle'' (part of the ''VideoGame/KingsQuest'' franchise), a villain is keeping an underage princess prisoner in order to ensure he's the one to marry her [[JailBaitWait when she's old enough]].
88	* In ''Literature/TheQueensThief'' series, the Queen of Attolia was a minor princess whose fiancé plotted to take the throne by killing her brother, the heir. Once that was done, the fiancé would seize power through her, except that he and his father [[TooDumbToLive discussed these plans around her openly]], so she poisoned him at their wedding and took the throne herself. However, because Attolia is pretty sexist, the country remained unstable so long as her barons thought they could marry her and seize power themselves, forcing her to enact a brutal regime [[spoiler:until she married Eugenides, who puts in enough kinging that she can maintain her rule without a problem]].
89	* In Fiona [=McIntosh=]'s ''Quickening'' trilogy, King Celimus tries to put the queen of a neighbouring kingdom in a position where she has little option but to marry him. Naturally, he's not intending to rule together with her.
90	* ''Literature/TheRiftwarCycle'' has two cases where the marriage-causes-demotion variant is relevant:
91	** In the ''Empire Trilogy'', Mara is the UnexpectedSuccessor to the leadership of House Acoma, but for political and social reasons, it's expected that she will marry someone and transfer lordship to him, especially because of her youth. She chooses a well-connected but easy-to-manipulate husband, which works for a while, but his abusiveness and incompetence eventually prompts her to navigate him into a situation where he publicly loses honour and has to [[{{Seppuku}} kill himself]], reverting formal control back to her. She later has other romantic arrangements, but makes a point of only ever taking a consort (who has no claim on her family titles) rather than a husband. [[spoiler:In the final book, she marries her second son to the daughter of the recently murdered Emperor to restore stability to the Empire in the aftermath of Ichindar's murder.]]
92	** In the ''Riftwar Saga'', the relationship between Tomas and Queen Aglaranna of the elves is of worry to the latter's people, since they think he might try to make himself king through it. In the end, however, he just becomes her consort, and her child from a previous marriage remains heir.
93	* ''Literature/ASongOfIceAndFire'':
94	** Ramsay Snow has used marriage twice to acquire (or legitimise his acquisition) of power. One of these instances utilizes trickery -- he claims to be married to Arya Stark, strengthening his position in the lands the Starks used to rule, but in fact, the girl in question is not Arya Stark at all but is actually Jeyne Poole posing as Arya.
95	** Lord Tywin's desire for Tyrion to go through with a marriage to another member of the Stark family, Sansa, has a similar rationale. Robb Stark goes so far as to disinherit Sansa to stop her marriage from being used as an excuse for House Lannister to rule the North.
96	*** Ironically, this trope once applied to the Lannisters themselves. When an old Lannister king died without male heirs, his son-in-law took the Lannister surname and was crowned as the first King of the Rock (the old royal title of the Lannisters before the Conquest) of Andal descent.
97	*** There is also the tale of the Lannister's mythical progenitor Lann the Clever, who originally took the Rock from the Casterlys (now only remembered for the name Casterly Rock). While folklore attributes the feat to many elaborate scams, they all boil down to "impregnating and marrying the last Lord's daughter."
98	** Alys Karstark runs away from home to Castle Black in order to prevent herself from being married to her EvilUncle who wants to inherit her title and home, the Karhold, when her brother dies (an event which they don't intend to be very far off) and who she fears will murder her as soon as she gives him an heir. Alys agrees to marry the Magnar of Thenn in an alliance brokered by Jon Snow, which he does to save Alys from her EvilUncle (who comes after her to carry her off against her will) and so she can retake her home, the Karhold. They form a new house -- House Thenn.
99	** Generally in this verse, however, an in-law is not considered a "full" heir but receives the title of Lord Protector. This is a regential title that allows one to rule until an heir who is related by blood to the ruling house matures. There are two Lords Protector in the books, Petyr Baelish of the Vale and Ser Bronn of the Blackwater.
100	* {{Engagement Challenge}}s in ''Literature/TalesOfTheFiveHundredKingdoms'' work this way. Most of the winners are of royal blood themselves, but the King of Otraria (from ''The Fairy Godmother'') was born common and elevated to crown prince when he married the princess.
101	* ''Literature/WiedergeburtLegendOfTheReincarnatedWarrior'': GenderInverted in the {{backstory}}. Empress Hilda of Nevaria requested the right to marry the former Emperor of Nevaria's son as her prize for winning the Grand Spiritualist Tournament. The Emperor later abdicated the throne to her, and she's been TheHighQueen ever since.
102	[[/folder]]
103
104	[[folder:Live-Action TV]]
105	* ''Series/{{Arrow}}'': Similar to his plans with ComicBook/{{Batman}} in the comics, Ras al Ghul wants to make Oliver Queen his successor and heir as leader of the League Of Assassins after the latter survived their first battle. For doing so he marries Oliver to his daughter Nyssa. [[spoiler: It backfires as Oliver has no interest in leading the League, just wanting to get close to Ras to kill him. Malcolm Merlyn ends up leading the League, despite having no familiar bond to the original Ras at all.]]
106	* In the backstory of the KoreanDrama ''Emperor Wang Guhn'', King Hunnan had two daughters but no sons, so he looked for an appropriate suitor amongst his knights who would then become king of Silla (pre-Korea Korea). The one chosen actually prefers the younger daughter, but he marries the older daughter because that's the only way he'd become king.
107	[[/folder]]
108
109	[[folder:Mythology & Religion]]
110	* Historically, UsefulNotes/TheProphetMuhammad had no living sons but had at least one daughter, Fatima. Fatima was married to Ali, [[KissingCousins Muhammad's cousin]], and according to Shiite Muslims, he was Muhammad's proper heir, followed by their sons (who were, of course, Muhammad's grandsons). Different branches continue to follow Ali's descendants, whether they're still around (Ismailis/"Seveners") or a MessianicArchetype believed to currently be in hiding. {{Averted}} by Sunni Muslims, who don't believe that leadership of the Muslim community has to be hereditary.
111	* Historically, many prominent rabbis bestowed their positions to their sons-in-law. Rebbe Menachem Mendel Schneerson, last leader of the Lubavitch Chassidic movement, is one particularly notable example of this trope from modern times.
112	* In [[Myth/ClassicalMythology Greek mythology]], Menelaus, prince of Mycenae, becomes king of Sparta through marriage to princess Helen after her stepfather and brothers die. Thus he also had a political motive for [[UsefulNotes/TheTrojanWar getting Helen back]], since she was the justification for his own position. Helen is also the daughter of Zeus and in Literature/TheOdyssey it is stated that after death Menelaus will go to the Elysian Fields solely by virtue of being Zeus' "son-in-law.'
113	[[/folder]]
114
115	[[folder:Video Games]]
116	* In ''VideoGame/AlQadimTheGeniesCurse'', the Caliph's daughter is due to marry a son of the Al-Hazrad family (you, the protagonist). However, the Al-Hazrads' genie nearly drowns the Caliph in a storm, and he decides that his soon-to-be in-laws aren't content with just securing the marriage — they want him out of the way so that they could seize the throne. The Caliph accepts that you were ignorant of the plot yourself, since you helped rescue him, but the other Al-Hazrads are imprisoned.
117	* In ''VideoGame/CrusaderKings'', the downplayed trope is very common, as characters get a prestige bonus from marrying landed characters or their close relatives (whether they are set to inherit or not). Otherwise this trope is averted as females either can't inherit at all (under completely agnatic systems) or inherit fully as rulers (agnatic-cognatic or fully cognatic systems) with whoever they marry being their spouse and nothing more or less. It is possible to marry female rulers in order to put ''your dynasty'' on the throne from the next generation onwards (and is the norm) but ''your character'' does not gain any influence in your spouse's realm simply by marrying her (until they die and you start playing their heir, at any rate).
118	* ''VideoGame/DragonAgeOrigins'' features Anora, the king's widow. It's a semi-ElectiveMonarchy, so marrying Anora doesn't automatically grant rulership, but it would provide a public relations bonus and a sense of continuity. It's possible for her to become co-monarch with her late husband's half-brother, joining their respective claims. Player characters who are noblemen can talk Anora into marriage themselves, but lacking royal blood, they only get to be Prince-Consort. (A third option just has Anora become queen regnant in her own right, without remarrying at all.)
119	* King Irwin ([[TheHero the Luminary's]] father) in ''VideoGame/DragonQuestXI'' married into the royal family of Dundrasil, [[BodyguardCrush having previously been the head of the princess' personal guard]].
120	* ''VideoGame/FateGrandOrder'': Adamska Violet is the current boss of the Violet Family which he married into. The fiancé of his eldest daughter Juliet would be next heir of the Violet Family due to Cain, the only son, being mentally handicapped and unsuited for the leadership role. [[spoiler:After all potential marriage candidates of Juliet ended up murdered, Cain steps forward and reveals to his family that he was not mentally handicapped at all and that he will take responsibility as the heir of the Violet Family and Goldie Family (due to his engagement between him and the Goldies' daughter Lorie).]]
121	* At the end of ''VideoGame/FinalFantasyTactics'', the winner of the SuccessionCrisis known as the War of the Lions marries the daughter of the late king to establish legitimacy for a crown he'd won by virtue of military might and ChronicBackstabbingDisorder. [[spoiler:The princess, unable to trust her husband because of his ChronicBackstabbingDisorder, tries to knife him, and is killed in self-defense.]]
122	* This is very common in ''Franchise/FireEmblem'' epilogues, especially those with modular pairings via RelationshipValues. But it's most notable in ''VideoGame/FireEmblemGenealogyOfTheHolyWar'', which devotes an entire ModularEpilogue to who inherits which nation as the two generations of conflict kills off much of the former ruling families. One of its most notable examples is Erinys, a simple Pegasus Knight with no noble blood, canonically becoming Queen of Silesse during the TimeSkip through her marriage to Lewyn.
123	* Discussed in ''VideoGame/JadeEmpire''; Silk Fox fears that Death's Hand will try to convince her father to invoke this trope on her. [[spoiler: she's wrong, for a number of reasons.]]
124	* In ''[[VideoGame/KingsQuestVIHeirTodayGoneTomorrow King's Quest VI]]'', the [[EvilChancellor Evil Vizier]] has killed the king and queen and is trying to force their daughter to marry him. He doesn't care about the real princess, being willing to achieve his ends with a shapeshifting genie if required. In the end, the hero marries the princess instead.
125	* In ''VideoGame/TheLegendOfZeldaFourSwords'', the plan to take over the kingdom begins with kidnapping Princess Zelda for marriage purposes.
126	* The GoldenEnding of ''VideoGame/PrincessMaker'' has this happen with the daughter marrying the prince and being chosen by the king to succeed him to the throne as queen regnant.
127	* This is the point of the Throne of Miscellania quest in ''VideoGame/RuneScape''; in order to become the prince/princess regent of Miscellania, the king, Vargas, requires you to marry his son, Prince Brand (as a female player) or daughter, Princess Astrid (as a male player). It is downplayed, however, since you only have to get engaged to the royal child in order to become regent and you never actually have to marry them. Though you can marry them later on, it's your choice and will not affect your regency if you don't [[spoiler: and you remain regent even after they die]].
128	* In ''VideoGame/ValkyriaChronicles'', Prince Maximillian's plan to take over Gallia involves forcing its princess to marry him.
129	* ''VideoGame/YesYourGrace'': Succession works that way in the game's setting. At some point, it's explicitly stated that since the PlayerCharacter doesn't have a son, the next-in-line for his throne is his son-in-law. This can be fixed by him having a new child and arranging for it to be a boy.
130	[[/folder]]
131
132	[[folder:Visual Novels]]
133	* This is the norm in ''VisualNovel/TheConfinesOfTheCrown'', with it being a matter of law that sons-in-law take precedence even over actual sons. Marrying an eldest daughter makes you heir, while the sons who would be heirs in a more traditional set-up have to go princess-hunting in the hopes of becoming king somewhere that way.
134	[[/folder]]
135
136	[[folder:Western Animation]]
137	* Much like in the comics, the two-part episode "[[Recap/BatmanTheAnimatedSeriesE60TheDemonsQuestPart1 The Demon's]] [[Recap/BatmanTheAnimatedSeriesE61TheDemonsQuestPart2 Quest]]" of ''WesternAnimation/BatmanTheAnimatedSeries'' has a weakened Ras al Ghul holding out for Batman to marry him off to his daughter Talia as he deems him a worthy heir. In contrast to other examples Talia in this version actually supports that plan. Much like in the comics, Batman refuses the offer.
138	* In ''WesternAnimation/TheFairlyOddParents'', this is revealed to be Princess Mandie's reason for wanting to marry Mark Chang; her plan was to marry Mark, get rid of his father, and then set Mark aside, so she could be the queen of both their worlds and used the combined strength of both to conquer the universe. The plan would have succeeded, but luckily for Mark, [[BabysitterFromHell Vicky]] put a stop to it out of love for Mark.
139	[[/folder]]
140
141	[[folder:Real Life]]
142	* Formal, codified systems of royal inheritance tend not to use this idea--those who don't let princesses inherit tend to send the throne to a male cousin (who does have [[BlueBlood royal blood]]) rather than sending it to a princess's husband (who doesn't). That said, plenty of people have pressed claims based on their marriages anyway, and if they had the bigger army, sometimes got away with it. A man ''could'' legally get a title through his wife, but would hold it ''jure uxoris'' ("by right of his wife" or "in right of a wife"). Legally the husband and wife would equally hold the title, rather than the husband taking the whole thing, but sometimes he could take it in the case of her death or even divorce.
143	* The first Roman emperor, UsefulNotes/{{Augustus}}, had no sons, only a daughter Julia. He tried to marry her to handpicked successors, but the first one (Marcellus) died. The second one, Marcus Agrippa, also died, but not before they had 3 sons (and 2 daughters). However, two of those died young and the third was exiled for unclear reasons. By then, Augustus was married to Livia, who had an adult son, Tiberius, from her first marriage. The problem was, Tiberius was already married to Agrippa's daughter from an earlier marriage. Augustus ordered him to divorce his wife, marry Julia, and become his heir. Both Tiberius and Julia hated each other, and after her extramarital affars became known, she was exiled. Tiberius ended up becoming emperor.
144	* From English history:
145	** After James II of England was deposed in 1688, the crown passed to his daughter Mary II and her husband William III, who reigned as co-monarchs. It helped that William was next in the line of succession as Mary's [[KissingCousins first cousin]], and that he took the crown in what was essentially a coup d'etat (Parliament basically issued him a very polite engraved invitation to come and "invade" the country, as they didn't like his uncle/father-in-law King James II setting up a Catholic dynasty). William also brokered a deal with Parliament that stipulated he would continue to reign by himself if he outlived Mary rather than the crown passing to Mary's sister Anne, who normally would have been next in the line of succession. Parliament considered it a ''very'' remote possibility that William would outlive Mary, who was 12 years his junior and enjoyed much better health than both him and her sister Anne, but Mary unexpectedly died of smallpox at 32, leaving William as sole monarch for eight years.
146	*** At the same time, it was made clear William's children would only succeed him if they were also ''Mary's'' children; if they failed to have children (which they did) or their children predeceased them, the throne would (and eventually did) pass to Mary's sister, Anne, even if William had remarried and had children by another wife (though he never did) because Anne, plus any surviving children she had (as it happens, they all predeceased both her and William) would have still been considered higher in the succession (as Mary's sister and nephews/nieces) than any child of William's by another woman (who would be her first cousins-once-removed).
147	** A downplayed example in the case of the Tudor claim to the throne of England and France; the Tudors already had their own claim to the throne, as descendants of the House of Lancaster, but it was weak. Henry VII's marriage to Elizabeth of York (heiress to the previous royal lineage) as well as the marriage by Princess Katherine of France (widow of Henry V) to Owen Tudor (Henry's grandfather) helped strengthen their claim, though it was primarily enforced by [[AppealToForce right of conquest]].
148	*** Indeed, Henry VII seemed to be aware of this trope and made a point of being crowned before his marriage to her to make it clear he was king by his ''own'' efforts, ''not'' by being Elizabeth's husband.
149	** The negotiations that preceded the marriage of Mary I of England and Philip of Spain were intended to ease English fears that this trope would hand ownership of England over to the Habsburgs. Under common law of the time, any property and titles held by a woman became her husband's upon marriage. Parliament demanded that Philip only receive the title of King of England [[http://en.wikipedia.org/wiki/Act_for_the_Marriage_of_Queen_Mary_to_Philip_of_Spain for the duration of Mary's life]], with no right to succeed her.
150	** Later on in history, Albert was the Prince Consort of Queen Victoria, but [[http://en.wikipedia.org/wiki/Regency_Acts#Regency_Act_1840 Parliament passed a law]] to prevent him from repeating William's actions. Not that it mattered--they had nine children, all of whom survived, and Prince Albert died in December 1861 at the age of 42, leaving Victoria a widow (and [[TheMourningAfter conspicuously so]]) for the rest of her long reign (just over 39 years after Prince Albert's death).
151	** This is most likely why Eleanor, the Fair Maid of Brittany, was kept imprisoned for her entire life; after the death of her brother, Arthur, she was technically the rightful heiress to the Plantagenets' vast holdings and a potential husband might have tried to press her claim.
152	** Similar to the above example, Princesses Gwenllian and Gwladys of Wales, the daughters of the last two independent Princes of Wales, were both placed in convents at a young age after their fathers' defeat to prevent the possibility of potential husbands claiming the throne through them.
153	* Frederick II, Holy Roman Emperor, inherited or was elected to many titles in his own right, but claimed the title King of Jerusalem by virtue of marrying Yolande, the heir of the Crusader States. Yolande was very young and not acting as ruler in her own right. What power she had in her name was exercised by her father John, acting as Regent. Upon their marriage, Frederick immediately declared himself in charge of her territory and dismissed her father. Yolande never reached adulthood--she lived only long enough to give birth to an heir and die in the process.
154	* Francis I, who was the Duke of Lorraine and Bar and the Grand Duke of Tuscany, officially became the Holy Roman Emperor and Archduke of Austria after marrying Maria Theresa in 1745. It was decided that Salic Law prevented a female ruler of the Holy Roman Empire which led to the War of Austrian Succession. To resolve the conflict, Maria Theresa married Francis and he was elected Emperor. In reality, Maria Theresa was the ruler, and she is remembered as Empress while Francis is mentioned less often.
155	* This was a sore spot between Mary, Queen of Scots and her husband Henry Stuart, Lord Darnley. While Darnley was officially the King of Scotland, with his name coming before Mary's on government documents and his face appearing on coinage, she was the queen and he the consort. Darnley was constantly badgering Mary and the Scottish Parliament to bestow him with the Crown Matrimonial, which would have allowed him to inherit the throne and rule in his own right if Mary died. Darnley's ambition to rule Scotland in place of his wife was enough that Catherine de Medici, Queen Mother of France, wondered if it affected his feelings toward his and Mary's son, whose claim to the succession trumped his.
156	* In addition to being King of Aragon in his own right, the Catholic Monarch Ferdinand was King of Castile (or co-monarch) by virtue of his marriage to Isabella of Castile. Their daughter, Joanna of Castile (called Joanna the Mad) married the Habsburg Philip of Burgundy (Philip the Handsome) who was recognized as King of Castile and was effectively the king of Spain.
157	* This is most likely why Holy Roman Emperor UsefulNotes/{{Charlemagne}} never let his daughters marry; he feared their husbands might challenge him or his sons one day for the throne. It had happened to other rulers from his line, so it was a reasonable fear.
158	** He was, however, fine with them having long-term relationships with his courtiers and even children with said courtiers since neither the lovers nor their sons could claim the throne without the benefit of marriage.
159	* This trope, together with {{Adult Adopt\|ee}}ion, is commonly used in Japan, where it is called [[https://en.wikipedia.org/wiki/Mukoyōshi Mukoyōshi]].
160	** Not a royalty example[[note]]Given how common {{Adult Adopt\|ee}}ion is in Japan, emperors are expressly ''forbidden'' to adopt[[/note]], but when Kinjiro Miyaki married neighbor Yae Kimura, his wife's family lacked a male heir, so he changed his name to [[https://en.wikipedia.org/wiki/Jiroemon_Kimura Jiroemon Kimura]], effectively being adopted by his in-laws to carry on the family. Kimura later became known for being the oldest man whose age is fully verified, living to 116 years and 54 days.
161	* In a vaguely posthumous example, the pagan (or possibly Orthodox) Didysis Kunigaikštis (Grand Duke) [[https://en.wikipedia.org/wiki/W%C5%82adys%C5%82aw_II_Jagie%C5%82%C5%82o Jogaila Algirdaitis of Lithuania]] was baptized into the Catholic Church as Władysław at age 24 (minimum), married to Królowa [[SheIsTheKing (King)]] [[https://en.wikipedia.org/wiki/Jadwiga_of_Poland Jadwiga Andegaweńska]] (who was [[AChildShallLeadThem 12, max]]), and went on to rule Poland for the rest of his life, outliving both Jadwiga who [[DeathByChildbirth survived her only child by mere days]] but also her second cousin, his second wife Anna of Cilli (a fellow great grand-child of Polish King [[https://en.wikipedia.org/wiki/W%C5%82adys%C5%82aw_I_%C5%81okietek Władysław I Łokietek]]) and ''her'' offspring. And his third wife, Elżbieta Granowska. It was the wife number ''four'', Sofja/Sonka, born to the Ruthenized Lithuanian house of Alšėniškiai/Гальшанскі, from whom the Jagiellonian dynasty traced their descent.
162	* Following the sudden death of [[UsefulNotes/CarolusRex King Karl XII of Sweden]] at the Siege of Fredriksten in 1709, his sister Princess Ulrika Eleonora inherited the throne since Karl had refused to marry until all his enemies were defeated. Ulrika abdicated to her husband Landgrave Frederick of Hesse-Kassel, Karl's brother-in-law, two years later.
163	[[/folder]]

Context Main / HeirInLaw