Carol, thanks for your reply.Yes, we are talking about the same Isaac that married Nancy Parsons.My family is traced as follows:
Isaac Alexander, b 1789 in NC Isaac W. Alexander, b 1830 in TN John Wesley Alexander, b 1857 in TN George Claire Alexander, b 1892 in GA George Alexander, b 1922 in GA
Please do put me in touch with the person involved in the DNA project.
I have nothing definitive about David Alexander as the next step in our tree, except that his will filed in 1796 lists a son Isaac.And as I posted, the Isaac shown in trees I've seen show a birth date after the death of David.
I do have other things I'm trying to research - for instance Issac had a son Jasper, and another named James - and there was a Jasper and a James in Mecklenburg.
Also in one of the census records in Tennessee there was an Elias - and now I see that as a name in the same grouping under the DNA project.
Thanks again, and I look forward to helping any way I can.