One of the off modal markers which has fascinated me is DYS 392 = 15. There are several with in M222. In review of the M222 project there are 5 Davidson (one w/spelling Davisson), 2 Clarkson,, a Backer, Byrnes, Crighton, Dougherty, Fergusson, McClelland, 2 McWhorer, Moore, Patterson, 2 Sizemore. 1 McConnaughey kit 197231 not listed in the the project page and I believe there are others as well on this list. Fair mix of Irish/Scottish surnames which may or may not be indicative of anything. I haven't done a good look to see which other markers they share, but since they all are M222 there is possibly some other off modal markers. There is connection by marriage on paper between this McC and Davidson; however this connection is that one was a wife (surname Davidson) to McC and his sister married the wife's brother and this is probably all just circumstantial and not relevant, but interesting. Unlike the others with dys 392 = 15, the McC has a 28 value at 389-2 which could indicate a rare double mutation, and 389-2 is considered faster mutating than 392, thus may or may not be of any significance, also interesting though. DYS at 15, however might be an interesting look, since this marker rarely mutates; it is among the slowest to mutate of all; and in fact early on during the beginning of DNA testing it was considered to not mutate at all until the data increased and they noted that indeed it did but rarely based on the data collected thus far. Why look at this marker with-in M222? Well, I did a cursory look in Y search and other projects, and it seems the majority with-in R1b who carry this value also fall in M222 either SNP or unambiguous. 2ndly this marker appears to mutate up rather than down, based on as assumptive look at what few R1b haplotype samples there are published for human remains dug up during archeological investigations. 389-2 appears by that same look to mutate down. Any comment and/or interest in pursuing this line of inquiry??? Susan