I am researching this Mercer family. Charles 'Chalkley' Mercer and Lydia Clinedinst? are the parents of Lydia Ann Mercer who md John Wagner in 1871 Noble Co, OH. I show that Charles died after Jun 1900. Looks like Lydia died bet 1880-1900. I suspect in Noble Co - likely Beaver Township area. Contact me for more info.