Thank you so much for your reply to my query. William Lock, Mary Lock's brother who moved to Tenn on the land from their father's service, also had a daughter named Jane G. Lock. Of course, I do not know for sure what the G. stands for. Because Mary Lock Barkley, named a son John Lock Barkley, and a dgt. Jane Graham, that was my theory. But a Cowan did provide bond for Mary Lock when her first husband Thomas Jones died, and she was left a widow with a small child. I really appreciate your input on this question. I know it is something that can never be proved either way. You never know what will turn up though in the future to prove it. Thanks again. I appreciate hearing from you.