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Diocese of Rockville Centre

Most Reverend Robert J. Brennan

Auxiliary Bishop and Vicar General, Diocese of Rockville Centre

Bishop Robert J. Brennan was born on June 7, 1962 to Robert and Patricia in the Bronx, New York. The oldest of five children, Bishop Brennan has 2 brothers and 2 sisters and 14 nieces and nephews. He was raised in Lindenhurst, New York where his parents still reside. Bishop Brennan attended Our Lady of Perpetual Help Catholic School and Saint John the Baptist Diocesan High School, West Islip, New York.
He went on to earn a bachelor’s degree in mathematics and computer science from Saint John’s University, Queens, New York.

Bishop Brennan studied for the priesthood at the Seminary of the Immaculate Conception, Huntington, New York and was ordained on May 27, 1989 by Bishop John R. McGann. He was first assigned to the Church of Saint Patrick in Smithtown, New York. In 1994, he was appointed Secretary to the Bishop. Bishop Brennan worked in that capacity for three bishops: the late Bishop John R. McGann, the late Bishop James T. McHugh and Bishop William Murphy.

On May 27, 1996, then Father Brennan was named Honorary Prelate to His Holiness Pope John Paul II with the title of monsignor. In 2002, Rev. Msgr. Brennan was named vicar general and moderator of the curia for the Diocese of Rockville Centre. In June 2010, Bishop Murphy appointed Msgr. Brennan pastor of the Church of Saint Mary of the Isle, Long Beach, New York.

Bishop Brennan has served on the Board of Directors for Catholic Health Services of Long Island for eight years. He also served on the Bishop’s Advisory Committee for Catholic Education as well as several other diocesan boards. Bishop Brennan is the chaplain for the Catholic Lawyers Guild of Nassau County and says Mass regularly for the Dominican Sisters of Amityville. Bishop Brennan is bi-lingual and works closely with the Spanish community. He regularly celebrates Mass in Spanish including Mass in the Nassau County Correctional Facility.

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