Patrick O'Donnell married Mary O'Donnell (different families!) in Co. Mayo. Both born in 1830's. Left for USA from Dublin. Children were Patrick, Bernard, Roger, Peter Regis, and Kathleen in PA. USA in late 1800's. Bernard was a founder of Villanova Univ. Peter Regis' children John Gerad O'Donnell born 1913 and Natalie in Philadelphia. John Gerad's children James b.1934 and John Peter b. 1936 in Brooklyn. I am the son of J. Peter, the last known O'Donnell of this clan in the US. Any information of the different related branches of O'Donnells originating from Co. Mayo, before or present would be appreciated.