This is really a long shot, but there is a Hiram Hart b: 1822 in Connellsville, Fayette Co., PA married to Sarah Ann Richter 7 Mar 1844, in my son-in-law's lineage. John and Sarah had a son John Hart b: 8 Jan 1845 OH. I don't know if Hiram died or they were divorced. Then Sarah had a son Isaac Sells...no record if she married Isaac's father. Then Sarah married a John Fisher and had about 10 more children. A couple of years after Mr. Fisher died, Sarah married again to a George Weninger....she was then 82 years old...seems incredible but it's true...announcement published in St. Joseph Co., Indiana.
Would appreciate hearing from you if this John and Hiram Hart have a connection to those you posted query on.,
Joan Cooke jmcooke@theriver.com