Father John McKenna was born in Brooklyn, New York to Stephen and Rosemary (Ryan) McKenna (deceased) and is the oldest of six children. He attended Our Lady of Perpetual Help Elementary School in Brooklyn.
Inspired by his maternal uncle, Fr. John T. Ryan, CSsR, and Redemptorist priests in his parish, he entered Saint Mary’s Seminary in North East, Pennsylvania in 1965 and graduated in 1969. From 1969-1970, he made novitiate in Ilchester (Ellicott City), Maryland, professing his Temporary Vows in 1970. He studied at Saint Alphonus College in Suffield, Connecticut, from 1970-1974, earning a BA in Philosophy. He professed my Final Vows as a Redemptorist in June 1974. He continued his preparation for the priesthood in Mount Saint Alphonsus, Esopus (Ulster County) New York. In 1978 he earned a Master’s in Religious Education (M.RE.) and a Master's in Divinity (MDiv). He was ordained a priest by Terence Cardinal Cooke, Archbishop of New York, on May 29, 1977.
At the end of his studies, Father McKenna was assigned to work in the Vice Province of San Juan, Puerto Rico. He went to language school in Cuernavaca, Morelos, Mexico, from September to December 1978 to learn Spanish and reported to his new assignment and ministry in Puerto Rico on January 1979. He served there for 20 years (1979-1999) in different parishes and towns: Mayaguez, Caguas, Guayama and San Lorenzo.
In 1999, he returned to the United States and made a sabbatical program at Catholic Theological Union in Chicago. His assignments in the United States have been: Immaculate Conception, Bronx, NY (1999-2001, Saint Martin of Tours, Bethpage, New York (2001-2005), Our Lady of Lourdes, Seaford, Delaware (2005-2011) Our Lady of Perpetual Help, Brooklyn (2011-2019), Saint Mary’s Annapolis, (2019-present).
Father McKenna’s family has grown to include 9 nephews and 2 nieces. His niece Clare attended the US Naval Academy (USNA), serving in the Marines, and his nephew Glenn also attended the USNA, serving in the submarine part of the Navy.
He is bilingual: English and Spanish.