Best of luck in your search. I have had much help over the years by others - sometimes the answer, sometimes clues that lead to answers, sometimes even more questions. Don't get discouraged. Sometimes I realize I had the information for several years before it dawns me how it fit. Also pay attention to what doesn't fit if there are other unrelated families.
Best bet - follow the neighbors and associated families to get back to Tennessee.
Now - if my Jane and David Bunch and the Howeths would just show me a loose brick in the wall ....