I also just noticed this in the R1b-L21_SNP_Tree_Discovery spreadsheet. Have we discussed Z16323 yet? These three are the only people of the 24 M222+ folks that are derived at Z16323: f27202 Cunniff f12068 Milligan f135550 Milligan It appears to be downstream of DF109/S660 and A1. BTW, A1 is something to discuss too. Beyond that the two Milligan's are exclusive in being the only people to have these four variants from Big Y gold regions: 22471633CT>C 24447754C>T FGC4133 24481701TTCC>T 25088392G>A FGC4134 You can see that FGC4133 and FGC4134 are point SNPs and must also be found in an FGC tester. If he's a Milligan too then we may Milligan surname markers. Regards, Mike W