Fr. Cooney was ordained in May 1947 for the Archdiocese of St. Paul and Minneapolis. He was incardinated into the Diocese of New Ulm in 1957 when it was established.
Fr. Cooney’s assignment history in the Diocese of New Ulm:
- Pastor, St. Mary, Willmar, 1954-1957 (while St. Mary, Willmar was still in Archdiocese), 1957-1967
- Pastor, St. Malachy, Clontarf, 1967-1980
- Pastor, St. Boniface, Stewart, 1980-1987
Fr. Cooney retired from assigned ministry in 1987 and died in 1988.