My great, great, great grandfather was Daniel Hollenbaugh, born I think in Barvaria, Germany. He came to the US in about 1833 and resided in PA. He married ? and had at least one child, David Daniel Hollenbaugh, born in Philadelphia, PA. David was buried, from what my records tell me, in Defiance County, OH. David married Catherine Kaufman in Sherwood, OH. Could these be the same Daniel and David you are searching for? I would be very interested in any information you may have.