History Main / AlternateTimelineAncestry

* ''Literature/{{Outlander}}'': In the second book Dragonfly In Amber, Claire posits to fellow time traveler Geillis Duncan's descendant Roger Wakefield in 1968 that it's possible that even if she prevents Geillis's younger self from travelling back in time and starting the family line in 1743 that culminates in Roger, his soul may be destined to exist no matter what and he would simply be born of a different lineage.

* ''Literature/Outlander'': In the second book Dragonfly In Amber, Claire posits to Geillis's descendant Roger in 1968 that it's possible that even if she prevents Geillis's younger self from travelling back in time and starting the family line that leads to Roger, his soul may be destined to exist no matter what and he would simply be born of a different lineage.

[[folder:Film -- Live Action]]

* ''VideoGame/FireEmblem'': {{Exaggerated|Trope}} in ''VideoGame/FireEmblemAwakening'' and ''VideoGame/FireEmblemFates'', as every female character in the core cast plus Chrom and Male Robin in ''Awakening'' and every male character in the core cast plus Azura and Female Corrin in ''Fates'' has a set child that they can have with almost anyone (generally, the {{Player Character}}s can romance and have their opposite-gender child with any other character while everyone in the core cast can romance one another). All this changes is the respective child's hair color (in fact, the parent/child support is the same no matter who the other parent is) and the existence of a sibling in the cases of Lucina, Morgan, Kana, and Shigure should their respective parents achieve S-Support with someone with their own child.

** In the Mayflower segment of "[[Recap/TheSimpsonsS17E18TheWettestStoriesEverTold The Wettest Stories Ever Told]]", Marge is a widow, mother of just Bart and Lisa. Still, Homer is alive, and a clandestine passenger who met them for the first time. Marge finally reveal that the father of her children was another man, whom she kept the portrait in a locket (and where we can see he too had the habit of strangle Bart). She hook up with Homer during the trip, so presumably the latter will set up in America as the stepfather of Bart and Lisa.

* In ''Manga/{{Doraemon}}'', the entire plot revolves around a kid from the future sending his robot nanny back to the past to improve the life of his ancestor, hoping that his own will be improved. Said ancestor catches on pretty quickly that improving his life may lead to him marrying a better woman and thus having different descendants, but the kid reassure him that the timeline will somehow correct itself and he will be born anyway despite having an entirely different great grandmother.

* In ''Manga/Doraemon'', the entire plot revolves around a kid from the future sending his robot nanny back to the past to improve the life of his ancestor, hoping that his own will be improved. Said ancestor catches on pretty quickly that improving his life may lead to him marrying a better woman and thus having different descendants, but the kid reassure him that the timeline will somehow correct itself and he will be born anyway despite having an entirely different great grandmother.

** In the Mayflower segment of [[Recap/TheSimpsonsS17E18TheWettestStoriesEverTold The Wettest Stories Ever Told]], Marge is a widower, mother of just Bart and Lisa. Still, Homer is alive, and a clandestine passenger who met them for the first time. Marge finally reveal that the father of her children was another man, whom she kept the portrait in a locket (and where we can see he too had the habit of strangle Bart). She hook up with Homer during the trip, so presumably the latter will set up in America as the stepfather of Bart and Lisa.

** In the Mayflower segment[[Recap/TheSimpsonsS17E18TheWettestStoriesEverTold]], Marge is a widower, mother of just Bart and Lisa. Still, Homer is alive, and a clandestine passenger who met them for the first time. Marge finally reveal that the father of her children was another man, whom she kept the portrait in a locket (and where we can see he too had the habit of strangle Bart). She hook up with Homer during the trip, so presumably the latter will set up in America as the stepfather of Bart and Lisa.

* ''WesternAnimation/TheSimpsons'': In "[[Recap/TheSimpsonsS24E2TreehouseOfHorrorXXIII Bart and Homer's Excellent Adventure]]", Bart goes back in time and ruins his parents' first meeting, ensuring Marge never falls for Homer. He initially fears that this will erase him from existence, but instead discovers that he, and his sisters Lisa and Maggie, are now the children of Marge's old boyfriend Artie Ziff (and have gained his hairstyle, to boot).

** This is averted in the Mag'har questline, taking place another 30 years down that timeline. In the main timeline, Durotan and Draka had a son, Go'el. In the alternate timeline, they had a daughter, Geya'rah, who is in many ways Go'el's opposite and can scarcely be considered the same character.

** The [[AlternateRealityEpisode "Another Day"]] versions of Ken Doi and Sho Minamimoto, who are father and son. [[AmbiguouslyRelated It's possible]] their main universe counterparts are as well, but there's no other evidence to indicate as such.

* ''VideoGame/FireEmblem'': Taken UpToEleven in ''VideoGame/FireEmblemAwakening'' and ''VideoGame/FireEmblemFates'', as every female character in the core cast plus Chrom and Male Robin in ''Awakening'' and every male character in the core cast plus Azura and Female Corrin in ''Fates'' has a set child that they can have with almost anyone (generally, the {{Player Character}}s can romance and have their opposite-gender child with any other character while everyone in the core cast can romance one another). All this changes is the respective child's hair color (in fact, the parent/child support is the same no matter who the other parent is) and the existence of a sibling in the cases of Lucina, Morgan, Kana, and Shigure should their respective parents achieve S-Support with someone with their own child.

** This is averted in the mag'har questline, taking place another 30 years down that timeline. In the main timeline, Durotan and Draka had a son, Go'el. In the alternate timeline, they had a daughter, Geya'rah, who is in many ways Go'el's opposite and can scarcely be considered the same character.