I'm not sure if you're looking for the ancestors of the spouses, but the John Neal (if he's from Fayette Co.) is probably a descendant of either George M. Neal from Tennessee, or Green Pinkney Neal from South Carolina.
I'm a descendant of George Neal, and from what I can tell, most of the Neals in Fayette County during the 1800s seem to be related to one of these two men. Both men seem to have migrated to Fayette in the early 1800s.
Let me know if you'd like any info on the Neals. I'd very much like to get in touch with any "cousins", because I've yet to find anyone else researching the same Neal line.