Most Reverend Michael Mulhall was born in Peterborough, Ontario, on February 25, 1962, one of five children of Vernon and Maureen Mulhall. He received his elementary and secondary education in Peterborough and then studied at Trent University where he obtained his B.A. in 1985. He pursued theological studies in Rome at the Angelicum (S.T.B.—1988) and at the Augustinianum (S.T.L.—1991) while following the formation program at the North American College.
Bishop Mulhall was ordained to the Priesthood for the Diocese of Peterborough on july 21, 1989. From 1991 to 1994, he served in Huntsville. From 1994 to 2002, he served as an official of the Holy See in the Congregation for Oriental Churches. Returning to his native diocese in 2002, he served again briefly in Huntsville and then in Hastings.
In 2003, he was given added responsibilities as Chancellor for Spiritual Affairs and in 2004, as Vicar General of the Diocese of Peterborough. He occupied these positions until June 30, 2007, when he was appointed Bishop of Pembroke, Ontario, by Pope Benedict XVI. He was ordained as the eighth Bishop of Pembroke in St. Columbkille’s Cathedral, Pembroke, Ontario, on September 21, 2007 by the Most Reverend Luigi Ventura, Apostolic Nuncio to Canada.