mom is yupik, dad is a member of a federally recognized tribe that's inupiat
grins aside, if a creek marries a choctaw their children would bee fullblood but the bia would "pick" the tribe for them up until recently. In the west because several tribes would be hammered into one res, and people back in the day traveled, it would not be unusual. Crow man, shoshone woman, kids marry a paiute and grandkids party in arizona with navaho's. Indians are a lot like hobbits when it comes to ancestry. They usually know a very extended family tree and are proud to claim relatives of different tribes.