Genealogy often feels like a puzzle, but sometimes it can resemble a mystery novel with unexpected twists and hidden characters. Recently, I encountered another “mystery match” on Ancestry—a previously unknown relative who shared a significant amount of DNA with my 1c2r, while working on organizing her paternal DNA matches (the side we share), yet didn’t quite fit into the known family tree. Here’s how I approached this genealogical mystery and pieced together the clues. 1. A Surprising Match: The First Clue The journey began with a surprising DNA match categorized as “Close Family” by Ancestry. They shared 426 cM of DNA and Ancestry predicted them as a 1st cousin 2x removed, which these centimorgans suggests a relationship in the range of a 1st cousin 1x removed (1c1r), a half grandnephew, a great-great nephew, or a half first cousin (1/2 1c), among others—each intriguing and requiring a closer look to confirm. 2. Tools for Relationship Estimation Using three key tools, Ancestry’s “Frequency of Relationships”, DNA Painter’s Shared cM Project Tool, and MyHeritage’s cM Explainer tool, I analyzed these possible relationships. Both former tools highly suggested the most likely possibilities were Great-Great-Nephew, Half Great-Nephew, 1C1R, Half 1C, Half Great- Uncle, or possibly a Great-Great-Uncle, and the later tool highly suggested 1C1R. But this was just the start—the tools help narrow the field, but genealogy is about testing hypotheses. 3. Shared Matches: Clues from Family Connections I began comparing their shared matches. By cross-referencing these shared matches, I found some links that connected our DNA mystery to known family members who are descendants of her grandparents’ children, thus her father and his siblings—in which two are known to have had extramarital affairs. This provided an important clue: this new match was likely another result of our family’s history of complex relationships. 4. Analyzing cM Comparisons and Mapping Relationships To further test my hypothesis, I reviewed the cM values of known family members who share connections with this mystery match, using not only the Shared Matches tool, but the Shared Matches Pro Tool as well. Comparing cM values from other relatives on this line, I found patterns that suggested a very close family link. Based on their age (if the match is the only associate of the test manager that I found in public records with a name that fits the screen name initials) and likely generation, the match seemed to fit best as a half great-nephew--but identifying exactly where they fit requires more direct evidence, thus more work needs to be done analyzing cM comparisons and mapping relationships for the other 3 possibilities—1C1R, Great-Great-Nephew, or Half 1C. 5. Reaching Out to Potential Relatives The next step was to contact the mystery match’s test manager, as his screen name was just initials. Although the account had been inactive for over a year, I tried reaching out via Ancestry messages and Facebook (after I checked through public records, so I knew who to look for based off age, location, and associates). This is often a waiting game, and not everyone responds, but sometimes, persistence pays off. Every piece of information can make a difference, and connecting with living relatives can clarify lingering questions. 6. Lessons Learned: Tips for Investigating Mystery Matches This mystery match investigation highlighted several useful techniques for anyone facing a similar DNA puzzle:
By following these steps, I’ve gotten closer to understanding how this mystery match fits into our family story. DNA testing is a powerful genealogical tool, but it’s detective work as well. Each match is another chapter in the family’s story—one just waiting to be told. © 2024 Diane Henriks @ Know Who Wears the Genes in Your Family More Genetic Genealogy/DNA ResourcesFind more DNA genealogy resources, tips, and other info under the Genetic Genealogy and DNA category. More Genealogy ResourcesLearn about more family history and genealogy resources under the Genealogy Resources category and on my dedicated Genealogy Resources page. More Genealogy Brick Walls and MysteriesFind more genealogy brick wall research, tips, and other info under the Genealogy Brick Wall Research category. More Genealogy Research TipsFind more genealogy research tips under the Genealogy Research Tips category.
4 Comments
Marian Wood
10/29/2024 04:30:01 am
Very intriguing! I hope your matches respond and have new info for you. Best of luck.
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Lisa s. Gorrell
10/29/2024 07:00:24 am
Great post. Thanks for sharing the initial process.
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11/10/2024 11:15:51 am
Thank you. Always glad to share. Thanks for reading. :)
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