Hello, if your Terrill cousin tested with Family Tree DNA, then he should join the Y-DNA Haplogroup I-M223 Project. I am one of the administrators for that Project. We can have a look at his results and perhaps predict which of the main branches of I-M223 he may belong to. If not we can...
I-M223 in Ulster
My I-M223 connection to Ulster appears to commence with I-FGC15127 in the Roots 912 Sector on the I-M223 Project at FTDNA. This I-FGC15127 has three documented branches and several sub-branches all associated with the same surname. Branch nodes upstream have sub-branches in...
Haplogroup I2-M223 famous person: Lawrence Gilman Roberts
Lawrence Gilman Roberts 1937-2018
His son and a cousin tested with Family Tree DNA and discovered their Y-DNA Haplotree to be:
I-M223
... I-P222
...... I-CTS616
......... I-FGC15071
............ I-BY1003
............... I-L1229...
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