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In reply to the discussion: My family thought for generations that we had a Cherokee ancestor. [View all]WePurrsevere
(24,259 posts)While your sister may have found records showing that Susie was from Germany it's still possible that you do have NA ethnicity back in time and it's just not showing up.
Here's a great article that explains why this can happen with NA DNA:
http://www.rootsandrecombinantdna.com/2015/03/native-american-dna-is-just-not-that.html
For a decent explanation about ethnicity in general not being reliable this is a good one:
https://www.legalgenealogist.com/2019/01/27/and-still-not-soup/or
DNA for ethnicity, as a science, is not as accurate as it is for matching.
As an adoptee searching I'd tested at the big 2 plus uploaded my raw data to GEDmatch, MyHeritage and FTDNA. Now that I'm 'in reunion' with both sides I have a decent family tree started that's based on records (plus DNA) so I can tell you from experience ethnicity definitely can vary quite a bit between testing sites.