John J. McMahon (bishop)

His Excellency, The Most Reverend John Joseph McMahon
Bishop of Trenton
See	Diocese of Trenton
In office	1928-1932
Predecessor	Thomas J. Walsh
Successor	Moses E. Kiley
Orders
Ordination	May 20, 1900
Consecration	April 26, 1929 by William Turner
Personal details
Born	(1875-09-27)September 27, 1875 Hinsdale, New York, US
Died	December 31, 1932(1932-12-31) (aged 57) Buffalo, New York, US
Denomination	Roman Catholic
Education	St. Bonaventure College Pontifical Urbaniana University

John Joseph McMahon (September 27, 1875 – December 31, 1932) was an American prelate of the Roman Catholic Church. He served as bishop of the Diocese of Trenton in New Jersey from 1928 until his death in 1932.

Biography

Early life

John McMahon was born on September 27, 1875, in Hinsdale, New York. He graduated from Union High School in 1893. 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.

McMahon was ordained to the priesthood for the Diocese of Buffalo on May 20, 1900. On returning to New York, he served as a curate in parishes in Jamestown and Buffalo before becoming pastor of a parish in Newfane. He also served as assistant superintendent of diocesan schools and director of the Holy Name Society.

Bishop of Trenton

On March 2, 1928, McMahon was appointed the fourth bishop of the Diocese of Trenton by Pope Pius XI. 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. He was installed at St. Mary's Cathedral, Trenton, New Jersey on May 10, 1928.

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