1955: Ordained in the Diocese of Los Angeles
1956-1960: St. Frances of Rome Catholic Church, Azusa, CA
1961-1966: St. Agnes Catholic Church, Los Angeles, CA
1962-1965: Bishop Conaty High School, Los Angeles, CA
1966: Unknown
1967-1969: St. Bernadette Catholic Church, Los Angeles, CA
1970: St. Brendan Catholic Church, Los Angeles, CA
1970-1974: Santa Clara High School, Oxnard, CA
1971-1974: St. Anthony Catholic Church, Oxnard, CA
1975: St. Joseph Catholic Church, Pomona, CA
1976-1989: St. Genevieve Catholic Church, Panorama City, CA
1989: Died
Notes: Fr. Cosgrove is accused of sexual abuse between 1979 and 1980 at St. Genevieve Catholic Church in Panorama City and was named in a civil lawsuit. His name was included on the Archdiocese of Los Angeles’ 2004 list of priests accused of sexual misconduct involving minors.