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Border Ramblings

Identity and the Pitfalls of DNA Testing

24/4/2019

1 Comment

 
My DNA and that of my relatives never ceases to amaze me.  Although I have very few matches at 4th cousin or closer, (not surprising given how few immediate relatives I actually have), smaller matches that originate deep in my family's past are now providing proof of links to ancestors many generations ago.  Most of these matches are living overseas, which reinforces my theory that the sense of 'identity' is heightened by separation.  A type of 'displacement' has occurred that heightens the sense of ancestral belonging which is the driving force behind why more people than ever are testing their DNA. 

Many just want to test their 'admixture' or, as Ancestry calls it 'ethnicity', which represents the ancient migratory paths taken by our ancestors.  Others are keen to use 'cousin matching' to reconnect with lost family members.  Whatever your motives are for testing, do take some time to consider the potential downsides and the emotional upset it may cause before you 'spit'.  A while ago, Margaret Ross contacted me for a little help which did lead to a revelation which could potentially have caused a great deal of family upset.  I suggested she write about her experience so that others may be forewarned.  She very kindly agreed.  I hope you all enjoy the read.

​Susie

Identity and the Pitfalls of DNA Testing 
by Margaret Ross.

Picture
“Connect with relatives you never knew you had” (Ancestry)
“Amaze yourself … find new relatives you never knew existed” (My Heritage)
“Confirm family history and traditions” (FTDNA)
Like many people, I got into researching my family’s history after the death of my parents, picking up where my father had left off from his forays into the public library. My interest was especially stimulated by his story about a tree he had drawn up with his paternal great-aunts which his mother destroyed on sight. I doubt if he knew, that not only did one of her husband’s aunts have an illegitimate son, but so also did at least two of her own aunts. Such things were never spoken of ninety years ago. My mother, who died nearly 20 years ago, would most likely have cut contact with her one and only first cousin had she known that she was illegitimate. Luckily, times have changed.

As my research got under way, I became more interested in locating the diaspora than going straight up my direct lines. In the nineteenth century numerous siblings of my ancestors (mostly agricultural labourers or mariners) emigrated from the British Isles to make new, and hopefully better lives for themselves and their descendants. Others went overseas with the military or colonial service. It has been fascinating to discover how they succeeded, where their thousands of descendants live, and to have contact with far-flung family members.

Four years ago, I was given an Ancestry DNA test to help me dig deeper into my family history. I put a note on my Ancestry Member’s page to say I’d tested, including details of my GEDmatch number. I gave my closest cousins kits to help identify where my matches fitted into our tree. But there were several lines where I had to try to persuade newly-discovered, overseas cousins to take the test. As far as I was aware, this was unsuccessful.

Last month I discovered a new tree on Ancestry which had incomplete details of some of my ancestors. I left a note for the tree owner, not expecting any response. Luckily, he replied immediately, saying that he had looked at my member’s page, and was surprised that we did not show as DNA matches, because we were third cousins (3C) sharing great-great-grandparents. Nor did I match a kit he managed for my second cousin once removed (2C1R) in the same line.

Alarm bells began to ring in my head. This is one of the largest group of relations in my tree, a group which is very proud of – and partly identifies with – our shared Celtic heritage. It was one where I’d been trying to persuade cousins to test on Ancestry. I gave my new contact the names of DNA-confirmed cousins of mine in this line and a link to Blaine Bettinger’s Shared cM tool. There were too many relevant cousins in his DNA matches to list: he opened his matches to me so I could check for myself.

Instantly, I could see that I had succeeded in persuading cousins to do DNA testing with Ancestry! At least 50 of his matches were on my own paper tree at 3C2R or closer. But neither I nor my own confirmed cousins on that side matched anyone in this family. It was obvious that our shared paper trail was wrong; there was no way we were related.

Neither my new contact nor I could identify at least eight close mutual matches he had with his known cousins in this line. The mutual matches he had with each of these eight invariably included most of the rest of that group. They all had a distinctly different ethnicity from his known cousins.  My assumption was that their trees could lead me to whoever was his great-grandfather if that was not my x2 great-uncle. Given these doubts, I felt the least I could do was try to find the true parentage. I needed to identify someone of the right sex (male) who was travelling through or living in the correct isolated, rural location in the Rockies over a period of at least 15 years.

It would have been inappropriate for me to contact any of this group, and certainly my newly discovered “Not 3C” wouldn’t want to. Only one had a public tree linked to their DNA, with 21 people in it. Another three had unlinked trees with one, five and 25 people. Three had no trees but one had a locked tree of around 450. I noticed that this DNA match was managed by Susie Douglas of Borders Ancestry, a professional genealogist living here in Scotland whose blog we follow in this household. After a lot of soul-searching, I decided to contact Susie in case she was puzzling as much over her matches with my “cousins” as I was over her match to my erstwhile family.

Whilst I was waiting for a reply from Susie, I started building a “quick and dirty” tree for each of these unknown matches. I saw that the two closest, both at 3C level, had the same surname as a further possible 3C whose linked tree revealed the name behind her alias. This suggested to me that the three were siblings, maybe researching their history after one or both parents had died. An Ancestry search on their father’s name brought up a recent result in the Find A Grave Index where hyperlinks enabled me to build back several generations on both sides of their family. I had no idea to which side my “cousin” connected but suspected it was through the paternal line. Another match in this group (unlinked tree) descended from a line with that name spelled differently.

With the help of Google and comparing the two very small unlinked trees, I discovered that two distant matches for my “cousin” were themselves first cousins. I built back their shared ancestral line for several generations, once more with no idea where I should be concentrating. At that stage I could not join up the two first sets of matches.   Although my own search was not relevant to Susie’s research, she very generously worked up a few ancestral lines in a “quick and dirty” tree for this set of matches. She provided me with the surnames of their shared ancestors living in England and New Jersey, America back in the eighteenth century. Luckily for me, one of these names was the maiden name of a paternal great-grandmother of the three sibling 3C matches, suggesting that my “cousin’s” true ancestor was most likely one of her sons or, less likely, a brother.

I needed to study the census returns. The couple lived on the east side of North America and had four sons and two daughters. Based on relationship probability, I discounted the grandfather of the 3C matches, leaving three sons to research. One had died before some of the children had been born, another showed up consistently in all relevant records living in the east. However, the census showed that the second oldest son, a Government official, had moved to the Rockies sometime in the late 1880s. From that time until his death in the 1930s he lived within ten miles of my great-great uncle’s family and would have travelled extensively throughout the whole area as part of his Government duties. He never married.

I have no doubt that this man, not my great-grandmother’s brother, is the ancestor of the large group of people I hoped were my relatives. One of the children was given his mother’s first name. We shall never know which man fathered the only one of the children who was childless, and who had the same name as my great-grandmother’s mother, but they all had my ancestor’s surname.  Their descendants share great pride in the farming and engineering projects the man they believe is their ancestor carried out in the area and he was without doubt a loving and caring, “hands-on” father and grandfather after a divorce, when their mother moved away.

After careful consideration, I told my cousin what I had discovered. He was very disappointed but, given his understanding of DNA testing, not really surprised. Together we have researched deeper into the history of the area at the turn of the twentieth century. There is the possibility that the man fathered other children locally; if he did, then this could further confuse anyone in either family undertaking a detailed analysis of their DNA results.  The surprise is that none of my “not 3C”’s close relations has queried their results yet. His assumption is that finding out about ethnicity and health risks is more important for most of them. And those who do research the family do not go further back than two generations. At present, he is not inclined to share this story with them; he expects that some elderly relatives would be distraught to know the truth.

To end on a more positive note, we have now discovered that my “not 3C” is distantly related to both sides of my husband’s family, certainly through his paternal line and probably through his maternal line as well. He still has Celtic connections!  This account only serves as reminder that DNA testing comes with the following caveats, albeit often tucked away in the small print …
“You may discover unexpected facts … when using our service. Once discoveries are made, we can’t undo them”
(In Ancestry’s Privacy Statement)

“…may reveal you are related to someone unexpected, or that you are not related to someone in the way that you expected” (LivingDNA’s FAQs)
“… you may also experience surprises, such as unknown relatives that you and your family were not aware of”
​(FTDNA’s Consent to Participate in Matching).
1 Comment

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    Susie Douglas

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Picture Susie Douglas Qualified Genealogist Family Historian and Writer https://www.qualifiedgenealogists.org/profiles/douglas-susie
​Member of the Register of Qualified Genealogists (RQG)​
Associate Member of Association of Genealogists and Researchers in Archives (AGRA)
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