Hello list, this is a question about Y-DNA. Sorry to ask it here, but this is the only list I belong to now. It's brief, so I hope someone can help. My Bennett cousins (Jon and Curtis) appear to be descended from brothers, based on strong circumstantial evidence, both born around 1810. They mismatch on 2 markers out of 37, 1 step on DYS460 (11 v. 12) and 3 steps on DYS442 (9 vs. 12). Curtis's value of 9 here is the only one for the entire group of 11 men that is not a 12. Another man, Ken, is a prefect match with Jon. But Ken, though not without paper trail evidence to a common ancestor a few generations back, does not seem so closely allied with Jon as is Curtis. If Jon and Curtis share a closer common ancestor, could their mutations have occurred somewhere further down the line? What about the odd value for Curtis at DYS442? Thanks, Barton