My great grandfather was full blood Indian, according to my grandmother. No one in our family has ever tried to claim native American anything.
My Great Grandfather walked across the line at Naco a few years before the Cananea strike and never looked back. He was Mayo from southern Sonora so no Oklahoma oil well in my ancestry.
My wife is 1/16th Mohawk, fully matrilineally, which she once mentioned qualifies her as a tribal member by their reckoning (plus our daughter).
Then again, when she gets a nosebleed she’s out of the tribe....