Another source of possible information on this family is given at http://genforum.genealogy.com/brock/messages/5401.html In particular, this message discusses the 1840 census information on the George Brock of Buchanan County. I'm relatively sure this George Brock was the father of my wife's ancestor, Elizabeth (Brock) Pritchett. You can contact me at dave.smith8633@sbcglobal.net and I'll be glad to share what I have with you. Dave Smith