I match men with the same surname as mine. However, should you continue to match these men at higher levels of testing (Y-37, Y-67, and Y-111) then you may wish to investigate the possibility of an adoption or name change in your family. Why do I match men with a surname from my mother’s side?Īs the Y chromosome is inherited exclusively from one's father, matching men with a Y-DNA test who share your mother's maiden name or another surname from her lineage may be a coincidence. For those matches at a higher number of markers (Y-37, Y-67, and Y-111), contacting your matches is the best way to learn more. Common causes for this include deliberate name changes and adoptions. If you continue to match others outside your surname at the Y-37, Y-67, and Y-111 marker levels, then there is likely to have been a surname change within the genealogical time frame. The time to a common ancestor for these matches may extend beyond genealogical records and the adoption of surnames. The main place that you will see matches with many different surnames is the Y-12 marker matches section. That could be in either your match's or your own line. Another reason for surnames not to match is that there has been a surname change in genealogical times. This is especially likely for groups where surnames were often not adopted until the most recent 100 to 200 years, for example, Scandinavians and Jewish populations. It may be that your connection is from a time before surnames were in common use. There are two reasons you may have a Y-DNA match with someone with a different surname. Why do I match men with different surnames? If you share a surname or match at 37 or 67 markers then your combined research efforts may lead to new genealogical discoveries. Once you have Y-DNA test results, contacting your matches is the next step in using your DNA for genealogy. This is because they cannot know the best Surname project to join in advance of testing. However, to best serve our customers who are adopted, we provide at the Y-12 level both 11/12 and 12/12 matching to the entire FamilyTreeDNA database to those in the Adoptee Project. * For Y-12 matches, 11 out of 12 matches are only shown with both customers belong to the same group project.
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