Hi all, I just had an autosomal DNA match with a William MacGillivray on 23andme. His yDNA haplogroup is listed as M222+. I am going to see if I can talk him into a more advanced yDNA test. MacGillvary is my mother's maiden name, and I can find a sort of paper trail to our common ancestor from the Moidart area of Scotland (near Arisaig). Clan MacGillivray seems to have originated in the western Hebrides, potentially on Mull. Clan history remarks that they were an important Clan prior to Somerled. Later, they sought protection under the McIntoshes and became part of the Clan Chattan federation. Clan MacGillivray were eventually awarded land in Inverness in the 15th century (or so). I would assume this would point to the MacGillivray's being Dál Riata, but of course further testing would be needed. There is an FTDNA Surname Project for them as well, see https://www.familytreedna.com/public/MacGillivray/default.aspx?section=yresults[there are M222+ listed there as well]. I noticed that John Lochlan asked about the MacGillivray's back in 2011: http://archiver.rootsweb.ancestry.com/th/read/DNA-R1B1C7/2011-04/1301697029 John