Ordination: Unknown

1965-1974: Daniel Murphy Catholic High School (Formerly St. John Vianney), Los Angeles, CA

1975: Dominican Fathers, Los Angeles, CA

1976-1979: Unknown

1980: St. Dominic, Los Angeles, CA

1981-1989: Unknown

1990-1992: Holy Rosary, Antioch, CA

1993: Unknown

1994-1997: Dominican Order, Sienna House, Oakland, CA

1998: Unknown

1999-2002: St. Mary Magdalen, Berkley, CA

2003-2007: Unknown

2008-2017: Order of Preachers, Oakland, CA

2018: Unknown

Notes: Multiple survivors have come forward alleging child sexual abuse by Fr. Mark O’Leary, from 1974 to 1977, in Southern California. Br. O’Leary has also worked in the Oakland Diocese. Br. O’Leary’s status as a priest, current whereabouts, and whether he has access to children are unknown.