I am trying to track the Heinbaugh lineage, but am having difficulty. At some point, the spelling changed from HEIMBACH or HEINBACH to the current HEINBAUGH. I believe this happened in the 1800's sometime. I can barely track back to a Jonas, whose son was Frank Jonas Heinbaugh (b. 1863 in Connellsville, PA)my great, great grandfather. Oral history indicates an earlier tie to a Peter in PA. Any help is appreciated.