I now have a photocopy of the entire Tunstall genealogy by Whit Morris. I can photocopy it for you and anyone else and would just charge for the cost of the photocopying and postage. It traces the descendants of Col. Richard and Ann Hill Tunstall, who were the grandparents of Elizabeth Tunstall, wife of Charles Lynch Adams. Through Ann Hill your Tunstall line is related to Matthew Fontaine Maury, the oceanographer.
Thanks to several other Tunstall researchers on this Genforum, I now have compelling circumstantial evidence that my ancestor, John Orrill Tunstall of Halifax Co., VA, was closely related to your Thomas Tunstall, probably a first cousin, which means I have a collateral connection to your Adams lineage.
The same offer applies if you are also interested in copies of the Stone genealogy which I also have.