Thanks for the reply. Yes, I have searched the census records. I also know that Nathan Calkins and most of his family are buried in the Camden Twp. Cemetery. I have searched the burials there...again no Mrs. Hart. I think she may have been the wife of Gehazi (Gahagi in 1860 census) Hart who in 1870 census is in Chatam Twp., Medina Co., OH., with a Catherine Hart. In 1880 Gehazi is married to another woman. In 1892 my Mrs. Hart visits her brother Nathan Calkins after a fire at her home in Huntington Twp., Lorain Co., OH.She is aselusive as Nathans father Eber Calkins!
Best Regards, Thomas R. Calkins email@example.com firstname.lastname@example.org