So... there's a prompt-a-thon, and I might've just done
this:
Crossover: Avengers Movieverse/Once Upon a Time/Star Trek (Reboot)
James T. Kirk doesn't think too much about his ancestors, and has no idea that he's the (however many times) great-grandchild of fairy tale royalty (on his mother's side) and a Norse god (on his father's side). Even though he was born in a lightning storm and has pretty much lived a charmed cursed interesting life.
(Because Chris Hemsworth and Jennifer Morrison and OF COURSE James T. Kirk would have a family like that...)
(Don't even ask me about how Clint and Natasha are actually the ancestors of the Weasley family. It involves Brave and, well, it was kind of a crazy summer.)
I could provide photo-evidence... C'mon, y'all know I'm right... ;)