Background
O'Neil, Leo E. was born on January 31, 1928 in Holyoke, Massachusetts, United States.
O'Neil, Leo E. was born on January 31, 1928 in Holyoke, Massachusetts, United States.
Degree, Mary-knoll Seminary. Degree, St. Anselm's College, Manchester, New Hampshire. Degree, Grand Seminary, Montreal, Quebec, Canada.
Priest Ordained Roman Catholic, 1955. Ordained titular bishop Bencenna, auxiliary bishop Springfield, Massachusetts, 1980—1989. Co-adjutor bishop Manchester, 1989—1990.
Bishop, diocese, from 1990.