I think that Leah might possibly be the daughter of Michael Gantz who was b 1783 of Milton Grove, Mount Joy, Lancaster Co,PA.
He left a wife, Margaret ? and children in PA and went first to Stark Co., OH and then Brandt/Bethel, Miami Co., OH. Margaret filed for divorce in 1826 and stated that he deserted her and children 4 June 1823.
I know that he had a son Jacob, b 1808 with the first Margaret.
I just received a book done by another Gantz researcher and she also speculated the same thing about Leah Gantz.