Click here to download our 2019-09-20 tree for I-Y5455
For reasons of legibility, we have created a new tree specifically for the I-Y5455 haplogroup. This contains all of the branches that are sometimes nicknamed Isles-C.
Isles-C was identified more than 13 years ago by haplogroup I expert Ken Nordvedt. Everyone in Ken's Isles-C cluster shares several distinctive STR marker values. And we now know that everyone in I-Y5455 also shares these values.
YFull estimates that the common ancestor of I-Y5455 lived approximately 2100 years ago. As far as we know, everyone in I-Y5455 has paternal ancestry from Ireland, especially from central-western Ireland (counties Mayo, Galway, Roscommon, Meath, Westmeath etc). There are some American families with unknown Irish/British ancestry who belong to I-Y5455. One of these families is named Armstrong which is a famous surname from the Scottish-English border area, and many of these Armstrongs settled in Ireland hundreds of years ago. But Armstrong is also often an anglicization of Irish language names that are also anglicized as Traynor, Lavery or Lowry. See https://johngrenham.com/
Click here to find our previous tree for I-Y3723 which included information about I-Y5455
Click here for a brief description of the I-Y5455 haplogroup
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