Wait, so you are white if you have a white ancestor, but only native if all of your ancestors are native?
You know natives didn't have any stricter racial controls than anyone else (well, most tribes, some were bigots).
If someone has a white parent and a native parent they can be natives. If that person has a white spouse their children can be native too as one parent is still native. Why would they be "white boys"? Thats some pretty blatant racial purity BS right there.
You're right, this topic is too complicated for you.