Margaret, I downloaded all of my atMatch segments from 23&Me (thru Ancestry Finder) and at FTDNA (5 at a time from Chr Browser) and combined them all into one spreadsheet, which I then sorted by Chr and start location. This arrays every matching segment I have from the beginning of Chr to the end of Chr X. I've then inspected the list and assigned group codes (eg 01n) to each overlapping group. I've then emailed the groups to see if they match each other. In several cases an atMatch and I have already determined a Common Ancestor. The thrid party in the group was amazed that I know her ancestor in the first email. FTDNA and 23&Me have determined the cutoffs (FTDNA is typically very conservative, so I believe virtually all their matches are good ones). I'm finding Common Ancestors for the groups. I'm also finded that some of the Common Ancestors I had previously identified, just can't work - they result in two different ancestors from one parent on the same segment. So the group is looking for other Common Ancestors, and several times we've found more than one from Colonial VA. I also belive that, particularly for 7.7cM segments, on one side or the other of that segment will be another of your ancestors who are a close cousin to the one youyou started with. These rules, like in geometry, will be powerful tools, to help us fill in our Ancestors. If I were you, I'd follow up on every lead - these are probably your cousins. Jim Bartlett On 05/17/12, Margaret Waters<[email protected]> wrote: Jim, The matches range between 6.1 and 9.7 cM with anywhere from about 700 to 1000 SNPs. Even if half of these matches were to my dad's lines and half to my mother's, that still seems like a lot of "cousin matches" (at least 25) in that one small location. It may be worth checking on the few larger ones but I suppose many of them are from the atDNA soup. This is all fascinating. Thanks for your input. Margaret