I wonder if this family was from Philadelphia, PA. and if Jonas could be my John, born about 1790 in PA, who married Sarah. At least that would explain the names in the City Directories. John and Mary/Mariah RITTER lived in PA according to records at familysearch.org. Their children were... Jonas born about 1791 Henry born about 1795 Jacob born 1796 Joseph born 1799 John born 1800 Good luck, Ella