Patrick John O'Dea, dubbed the "Kicking Kangaroo," was the greatest place-kicker in American football of his time. He was born in Melbourne ca. 1872 and played at the University of Wisconsin from 1896-99.He later coached there and at Notre Dame, and was elected to the American Football Hall of Fame.His 3 April 1962 obituary in the The New York Times gave his age as 90.
If your assumption that Patrick John was a grandson of Patrick O'Dea and Mary Corcoran (the dates would seem to work out), you'll still need to determine the relationship between that family and the Wisconsin Civil War veteran. Good luck with sorting it out.
Ed O'Day O'Dea Clan Historian firstname.lastname@example.org