If they do clarify it on their site, I hope they clarify the surnames used in the study as well as SNPs. It is well known Co. Mayo experienced periods of heavy migrations in and out, especially during the Cromwellian transplantations. As some will be aware, one such migration took place from Co. Donegal under Rory O'Donnell, his kindred and other native Donegal families. It would be interesting to know what percentage of those 105 males are the living descendants of those Donegal families, who made Co. Mayo their home in the 1654 and later. Alan In a message dated 11/11/2013 10:48:27 GMT Standard Time, [email protected] writes: Looking at my often hard to read notes, I do not find (nor recall) that Dr. Vilar said M222 had the highest diversity in Mayo. Frequency perhaps. I think he said they tested 105 men and 80% were M222. This should be clarified on the Natioonal Genographic site and blog soon. ------------------------------- To unsubscribe from the list, please send an email to [email protected] with the word 'unsubscribe' without the quotes in the subject and the body of the message