Have you checked into Quaker records for this family? Looked for his death record and obituary? I think several of the County histories have MERCER articles in them. I also have MERCERS...from Va. to to Muskingum Co. Ohio abt. 1820 (this area later became Coshocton Co. I believe) Samuel Mercer married Eustacia/Stacy/Tacy Holloway in 1825 in Coshocton Co. Ohio. FYI--There was one of those "scams" r.e. the Mercers about 1920 and there was a lot of unproven genealogy gathered at that time. Carol My brick wall is William Mercer born in 1824 Washington Co. PA. He married > Clarinda Mckisson of Morristown in 1845 they live in Belmont according to > the 1850 census. I do not know who his parent or siblings are Census records