15Ben Affleck and Matt Damon
They were childhood chums and became Hollywood elite standing side-by-side thanks to their Oscar-winning collaboration on Good Will Hunting. Despite deep ties, though, Batman v Superman's Ben Affleck and Jason Bourne's Matt Damon spent most of their lives thinking that friendship and creativity were all
they had in common. It turns out that isn't the case-- because they share a common ancestor. According to the New England Genealogy Society, Affleck and Damon both descended from a 17th century bricklayer-- and if you trace their lineages back, that makes them, more or less, 10th cousins.
No, that's probably not a close enough connection for even a super extended family gathering. Given their built-in bro-ship, though, that probably hasn't stopped them from celebrating their familial history-- after all, it is a pretty cool bit of trivia. What's more, Damon and Affleck have a pretty solid family trees all the way down the line; Damon is related to 11 former presidents, and Affleck's lineage connects to Princess Diana's family and 16 United States Presidents, including our current (for the moment) POTUS Barack Obama. Maybe a big family reunion isn't such a bad idea after all.