Carolyn - You are entirely correct... there are too many Roberts. Please notice the Robert you refer to had three sons and all of these sons had children named Robert. The Robert Barnhill and Robert Barnwell that went to Georgia were two separate Roberts. (See 1805 Georgia Cherokee land lottery). It has been said that Robert Barnwell changed his name from Barnhill to avoid confusion. We really don't know the reason, as there are various stories, and they all appear to have certain merits.