My great grandmother was Mary foulk, who was from Warren co. Ohio. I believe her to be the daughter of Obadiah and Emma Foulk from Waynesville, Warren Co. Ohio. In the 1880 census for him he does list a brother that lived with him who was Henry foulk. You have no Henry listed, but I really think this is the same family. Do you have any more information you can share? I have very little on this family line, so any you have would be appreciated.