Don McMurray, in particular, has posted extensively on these McM's. You can find his postings on RootsWeb, GenForum, etc. The first Wm.'s wife was Agnes; his son Wm. - one of 5 sons - was m. to Mary. There is some confusion on the wives in some other postings, which confusion is cleared up by Don's postings. It might help you to make connections w/ "cousins" to post which son - or 1 dau. - you are descended from. Wilda McMurry