One character is revealed to have a relationship with another character where under normal circumstances the older one would be dead.
There are certain cases where either the Immortal Procreation Clause does not apply and their children are not immortal or one had kids before becoming immortal (vampires are particularly prone to this). Not unsurprisingly sometimes an immortal ends up meeting his or her own great-great-grandchildren if not later descendants.
- In Kindred: The Embraced Julian is Sasha's great-great-grandfather
- By Time Enough for Love over 90% of the Howards and a decent proportion of mundane humanity trace their ancestry back to Lazarus Long.
- In The Sookie Stackhouse Mysteries the Belafleurs are Bill's descendants.
- Phil Foglio's Author Avatar in Girl Genius is the great-great-grandson of Oggie the Jägermonster.
Hello, Unknown Troper. You'll need to get known to lend a hand here.