I don't know if Nancy Winburn was the sister of Frances or not. I had thought she might be because Frances Winburn who married George Wade Barber lived on the next piece of land to William and Nancy, and because Frances and Littleton Barber witnessed the will of William Stanford. But I don't really know what the connection was. Did this Dempsey Winborne leave a will? I'd like to do a little more checking into that family. Do you have any further information? I do know Nancy married William in about 1815, so she was probably born in the 1790's. Does this fit with your Nancy?