John Aloysius O’Mara
John Aloysius O’Mara (17 November 1924 – 16 February 2022) was an American-born Canadian Roman Catholic prelate. O’Mara was born in Buffalo, New York. He was the bishop of the Roman Catholic Diocese of Thunder Bay, Canada, from 1976 to 1991 and as bishop of the Roman Catholic Diocese of Saint Catharines, Canada, from 1991 until his retirement in 2002.