How do I have proof of my ethnicity?

I want to believe that Im 37.5% German by heritage because I have 4 great great grandparents born in Germany, and a great grandmother who is a German

I want to believe that I'm 37.5% German by heritage because I have 4 great great grandparents born in Germany, and a great grandmother who is a German Bohemian. But how can I prove that these ancestors were ethnically German Blood people?

I have done DNA testing from 23andme and GEDMATCH, all my ancestors are European so I should be Caucasian by ethnicity, I know that 4 great great grandparents were born in Germany 2 ancestral couples, one I have traced back to the 1600's in Germany, the other couple is a brick wall. All I know is they are born in Pommerania Germany but I know nothing else about them. And also one great grandmother from Stipton Wienau (Sudetenland) the German part of Czechoslovakia. I have pictures of her, can I tell from the photos if she is a native European?

My maternal grandfather who should be 100% German by heritage is dead so I can't test him, so I had to use mom and three of her siblings. How can I confide?

or:I want to believe that I'm 37.5% German by heritage because I have 4 great great grandparents born in Germany, and a great grandmother who is a German Bohemian. But how can I prove that these ancestors were ethnically German Blood people? I have done DNA testing from 23andme and GEDMATCH, all my ancestors are European so I should be Caucasian by ethnicity, I know that 4 great great grandparents were born in Germany 2 ancestral couples, one I have traced back to the 1600's in Germany, the other couple is a brick wall. All I know is they are born in Pommerania Germany but I know nothing else about them. And also one great grandmother from Stipton Wienau (Sudetenland) the German part of Czechoslovakia. I have pictures of her, can I tell from the photos if she is a native European? My maternal grandfather who should be 100% German by heritage is dead so I can't test him, so I had to use mom and three of her siblings. How can I confide?

Tags:ethnicity,