John J. McMahon (bishop)

John McMahon was born on September 27, 1875, in Hinsdale, New York. He graduated from Union High School in 1893.^[1] McMahon then attended St. Bonaventure University in Allegany, New York, earning a Bachelor of Arts degree. He completed his theological studies at the Pontifical Urbaniana University in Rome.^[1]

McMahon was ordained to the priesthood by Patriarch Giuseppe Ceppetelli in Rome for the Diocese of Buffalo on May 20, 1900.^[2] On returning to New York, the diocese assigned McMahon as a curate in parishes in Jamestown, New York, and Buffalo. He was later named pastor of a parish in Newfane, New York.^[1] He also served as assistant superintendent of diocesan schools and director of the Holy Name Society in the diocese.^[1]

On March 2, 1928, McMahon was appointed the fourth bishop of Trenton by Pope Pius XI.^[2] He received his episcopal consecration on April 26, 1928, from Bishop William Turner, with Bishops Thomas Walsh and Edmund Gibbons serving as co-consecrators, at St. Joseph's Cathedral in Buffalo.^[2] He was installed at St. Mary's Cathedral in Trenton, New Jersey, on May 10, 1928.^[1]

After four years as bishop, John McMahon died in Buffalo at age 57 on December 31, 1932.^[2]