> I can see it being entirely possible that a great grandparent grew up on a reservation, learned all the customs etc. but was not born of native American paren

> I can see it being entirely possible that a great grandparent grew up on a reservation, learned all the customs etc. but was not born of native American parents. In this case they almost universally just made it up. (Specifically it's usually about a "Cherokee princess", though that might be a stereotype. It's never a different tribe though, just Cherokee.) In some cases it turns out their ancestors were part black and covered this up by claiming to be native though. > As you mention as well, being adopted etc. isn't uncommon. Oh, I'm talking about adultery.