Fr. Frank A. Sierra – Diocese of San Bernardino

Father Frank A. Sierra

Diocese of San Bernardino/Sons of the Holy Family

Frank Sierra Horowitz Law

Ordained: 1946

Removed: 2002

Died: 2013

Assignment History:

  • 1947: Unknown
  • 1948-1950: Holy Family Seminary (Silver Spring, MD)
  • 1951-1952: Our Lady of Peace (Greeley, CO)
  • 1953: Holy Cross (Santa Cruz, NM)
  • 1954-1959: St. Francis Jerome Church (Center, CO)
  • 1960-1962: Holy Cross Church (Santa Fe, NM)
  • 1963-1968: Our Lady of Fatima (Bayard, NM)
  • 1969-1970: Our Lady of the Light (El Paso, TX)
  • 1971: Absent on Leave
  • 1972-1973: Chaplain (U.S. Army)
  • 1974-1978: University of Texas (El Paso, TX)
  • 1975: Our Lady of Soledad (Coachella, CA)
  • 1976-1979: St. John (Encinitas, CA)
  • 1979-1980: On Duty Outside the Diocese
  • 1980-1987: Our Lady of Perpetual Help (Brawley, CA)
  • 1982-1983: On duty Outside the Diocese
  • 1988: Unknown
  • 1989-1990: Our Lady of Guadalupe (Calexico, CA)
  • 1990: Retired
  • 1991-1993: Retired; Our Lady of Guadalupe (Calexico, CA)
  • 1994-2008: Retired
  • 2009-2012: Unknown

Summary of Sexual Abuse Allegations Against Father Frank A. Sierra:

Fr. Frank A. Sierra was accused by multiple survivors of child sexual abuse while serving at Holy Cross in Santa Cruz, New Mexico, in the 1960s.

In 1970, Sierra moved to the Diocese of San Diego, where he allegedly continued to abuse children. According to the Diocese of San Diego, Sierra worked at St. Joseph in Upland from 1970 to 1974, and in 1988, Sierra retired. Sierra was accused in a 1994 civil lawsuit of sexually abusing girls in Santa Cruz, NM.

Sierra was removed from ministry in 2002. Sierra was included in the Diocese of San Diego’s list of priests where the Diocese has received a credible allegation involving sexual abuse of a minor. He was also included in the Archdiocese of Santa Fe’s list of clergy accused of child sexual abuse. Sierra’s whereabouts and whether he had access to children from approximately 1994 until his death in 2013 are unknown.

Horowitz Law is a law firm representing victims and survivors of sexual abuse by Catholic priests and other clergy in the Diocese of San Bernardino in California. If you need a lawyer because you were sexually abused by a priest in one of California’s Catholic dioceses, contact our office today. Although many years have passed, those abused by Catholic clergy in the Diocese of San Bernardino now have legal options due to a voluntary compensation fund created by the Diocese of San Bernardino, but filing deadlines will apply so do not delay in reaching out to us. Our lawyers have decades of experience representing survivors of clergy sexual abuse in California and nationwide. We can help. 

Contact us at (888) 283-9922 or adam@adamhorowitzlaw.com to discuss your options today.