Hello ThomasDNA,
FTDNA Big Y 700 data shows that I match a Williams (Y111-1) and we are so close that FTDNA generated a new Haptotype family for the two of us called R-BY67074 immediately under R-FGC39559.
Both of our families come from Breconshire, Wales. My Family stayed in Wales, and his family emigrated to Radnor Ohio. In spite of strenuous efforts, neither of us can find even the remotest family connection,
There was a spate of emigrants from Breconshire to Radnor Ohio, after a David Pugh (Skreen Farm, Llandeilo Graban) purchased land there about 1803. As I posted before, David Pugh's father married Mary Williams in Llandefalle Breconshire in the mid 1700's. His eldest son David emigrated to Ohio, almost immediately after a "Deacon" William Williams (who was married to David Pugh's sister Isabella) had returned to Breconshire, after doing a scouting trip led by a Theophilus Rees from Pembrokeshire.
I failed to trace Deacon Williams birthplace in Wales, although I had lengthy correspondence with a descendant in Licking Ohio. Also I found no link at all between my family and David Pugh's.
Also, I have a fairly close Y111-7 with Ellis ap William ap Hugh 1590 Merionethshire, Wales. His lineage is truly outstanding, and Rea Williams (Duncan Williams' son) made a database of thousands of Williams's in North America and Wales.
http://rea-williams.com/getperson.php?personID=I17739&tree=tree1Rea traced his Merionethshire family back to the 1600s and the details have been confirmed by several notable geneaologists.
Once again, I found no connection between my family and his, but I expect there are many Williamsons in his database. Rea's haplotype is R-S27900, but he died a couple of years ago, and there is little prospect of going deeper into the haplotype comparisons.
There is a family tree on Ancestry that has an accurate view of my family. I didn't publish it, and it was developed independently but the details are quite accurate.
I have sent a personal message to you, and we can discuss off-line
Best Regards,
Llanfi