Look Who’s Using DNA for Genealogy Research

In mid-March I received this message from one of my siblings:

Just wanted to let you know that I ordered a DNA kit from ancestry.com. I will send you the results when I get them. Hopefully it will be useful in your research.

When his results came in late May he sent me this message and screenshot:

Hope this doesn’t mess up your research too much.

ethnicityI thought he was holding out on me, waiting to let me know only after he came to visit for Mom’s 80th birthday. But the results truly did not come in until the early morning of the day he was to arrive in Luxembourg.

He turned administration over to me as he thought I would know better what to do with the test results as he does not do genealogy.

I haven’t done DNA testing but my second cousin Laura [daughter of Geraldine Dempsey Workman (1931-2007) – the first person I know of who worked on our family tree] shared her DNA page with me earlier this year. Since Laura and I share great-grandparents (William Henderson DEMPSEY and Laura Belle INGRAM) 3/4 of her matches did not have anything to do with our common line. It, however, helped me to get a feel for Ancestry’s DNA page before my brother’s results came in.

The ethnicity results (above) of 100% European were to be expected although it blew the theory of a Native American connection right out of the water. Or so I thought. Where do the 10% Italy/Greece fit into our family tree?

After a week or so of trying to figure out some kind of system to work through the matches on Ancestry, I decided to download the raw DNA data and upload it to GEDmatch. After the kit was tokenized and while I was waiting for the batch processing to complete I did a heritage test.

Admix Results (sorted):

# Population Percent
1 Early Neolithic Farmer 43.00
2 Western European/Unknown Hunter-Gatherer 25.49
3 Ancestral South Eurasian 18.91
4 Caucas-Gedrosia 7.59
5 NearEast 1.65
6 Amerindian 1.43
7 Ancestral South Indian 1.20

1.43% Native American DNA for my brother. I understand he got about 50% of his DNA from our father and 50% from our mother (European). Family tradition is the NA connection is through our paternal grandmother Myrtle Hazel ROOP‘s mother Rebecca Jane CLONCH. If I keep doubling the percentage (which may not be scientifically correct) I get 91.52% at the 4th great-grandparent level. Dennis CLAUNCH and Nancy BEASLEY are the only known set. Another ancestor at this level was Levina DOSS who had her children with an unknown man. The unknowns are COOLEYs and TREADWAYs.

I admit this was just a game I was playing before I begin to get serious about using the DNA results for research purposes. But who knows, maybe I’m on the right track.

Oh yes, Laura and my brother are “predicted 2nd cousins” and share 381 centimorgans across 15 DNA segments.


© 2016, copyright Cathy Meder-Dempsey. All rights reserved.