My great-greatgrandfather, John Herlihy who came from Cork married Mary Broderick in Chillicothe,Ohio in 1857.They had seven children. One daughter, Ellen, born in 1869, married Daniel Patrick Cronin in 1898 in Chillicothe. He died in 1936 and she lived until 1965. They had six children. One of their sons may live in Detroit. I do not know of any connection with Pennsylvania and have no information about D.P.Cronin.