Thank you very much for your response. My John was born in 1792, and William died, as an old man, apparently, in 1816, so it is unlikely he was my John's father. But my John's father was named John Jr., and he died sometime before 1823, so he may have been a brother of William. I'm sorry to hear William' parentage has never been found. But I may keep looking anyway. I may need more information on William's children, but don't want to ask you to provide it until I am sure. Thank you again.