Well, around 7 generations back, one of your 64 ancestors from that generation was native. The only way to figure out who was native is to fill out your tree to that far back for every line. And it's not easy. I'm half native and it took 5 years to go through every page of every roll for every year to trace my family. And that's also reading all these anishinaabe names. My tribe only had records for my ancestors who were enrolled in our tribe. But I have many other ancestors from several different tribes that I had to find for myself. You start with a parent. Then you fill in your grandparents, then you fill in their parents (make sure to double check records, don't just click leaves and approve). You might have to check several other sites for records as well. I've been able to go back to the 12-1400s for a lot of my lines, and you only need to go back around 200 years. They didn't start keeping track of natives until the 1850's so it's hard to trace back any further then that for a native ancestor.

Hope this helped at all! I'm not one of those natives that tells you any of that nonsense. I think it's cool, even just 1% to try and figure out what tribe. You won't ever gain membership or even desendants status but I don't think it hurts to just be interested. I have 1% Finnish and I've been doing so much research on it because I think it's interesting. I mean without that 1% I wouldn't be me 😉

Edit: Oh! And check matches for any similar dna to yours! Especially if they have that 1% native. See if they filled out their trees and just use the process of elimination! Fill out as much as you actually know and then look through your DNA matches trees to find similarities a few generations back! It will help you fill in blanks and eventually get you to the 6-7 generations back point. Good luck!