LeBaron clan polygamist groups
Network of fundamentalist Mormon polygamist groups descended from the LeBaron family. Notable for the 1972 Joel LeBaron assassination ordered by his brother Ervil; the 1977 'Lambs of God' assassinations across the US; and the 2019 Mexico cartel-related massacre of nine LeBaron family members.
CLCI radar
BITE breakdown
+2 for documented internal murders ('blood atonement') and the ongoing US-Mexico cartel-related violence.
Profile facts
In context
The LeBaron clan descends from Alma Dayer LeBaron's Church of the Firstborn of the Fullness of Times, a fundamentalist Mormon offshoot that put down roots in northern Mexico in the mid-20th century. After Alma's death the movement splintered among his sons, most consequentially between Joel LeBaron, who led the mainline Church of the Firstborn, and Ervil LeBaron, whose rival faction evolved into what became known as the Church of the Lamb of God, or "Lambs of God."
Ervil LeBaron taught a doctrine of "blood atonement" holding that rivals, dissenters, and even family members who threatened his claim to prophetic authority could be righteously killed, a teaching that moved the group from the standard fundamentalist-Mormon pattern of plural marriage and closed communal life into organised political violence. Marriages within LeBaron communities have included unions involving underage girls and frequent intermarriage among extended family lines, and, as in other fundamentalist Mormon splinters, leaving the community has typically meant severing contact with relatives who remain inside.
Ervil orchestrated the 1972 assassination of his own brother Joel, and in 1977 directed a wave of "Lambs of God" killings across multiple U.S. states targeting former followers and rival leaders, a campaign that produced numerous convictions and remains one of the most extensively documented cases of religiously motivated murder connected to an American new religious movement. Descendant LeBaron communities in northern Mexico continued to draw international attention long after Ervil's death in prison in 1981; in 2019, nine members of the extended LeBaron family, including six children, were killed in an ambush near Bavispe, Mexico, attributed to drug-cartel violence rather than internal sect conflict, underscoring the precarious position of these isolated communities.
Multiple LeBaron-descended polygamist groups persist today, some far removed from Ervil's violent theology, continuing plural marriage and dense intra-family networks across communities straddling the US-Mexico border. The clan's history is frequently cited as an extreme illustration of how a claim to prophetic succession, combined with communal isolation, can escalate into organised violence directed inward at the group's own members, while the 2019 massacre shows how such isolated communities remain vulnerable to threats from the wider world around them as well, a double exposure distinct from but compounding the harms generated from within.
History
Originating with Joel LeBaron's mid-20th-century Mexico-based Church of the Firstborn, the clan split repeatedly and produced one of the most violent fundamentalist Mormon lineages.
Key control doctrines
- Blood atonement doctrine (Ervil sub-lineage)
- Polygamous plural marriage
- One True Prophet succession claims
Recovery resources
- Holding Out Help (Utah) — Utah-based direct services for Mormon-fundamentalist exits — relevant for LeBaron-descended families in the US.
- Sound Choices Coalition — Ex-FLDS-founded advocacy supporting women and children leaving fundamentalist polygamous communities.
- Cherish Families — Support for families and children exiting fundamentalist polygamist groups; Utah / Arizona focus.
- ICSA (International Cultic Studies Association) — General referral and cult-aware therapist directory; particularly relevant given the LeBaron history of violence and cross-border movement.
- Freedom of Mind Resource Center — Steven Hassan's organisation; family-side exit guidance and BITE-model resources.
See the full curated list at /resources.
Notable public ex-members
- Anna LeBaron
- Ruth Wariner
- Susan Ray Schmidt
Legal cases & controversies
- Multiple 1970s 'Lambs of God' murder convictions
- 2019 Mexico massacre and ongoing investigations
Evidence by BITE axis
- Polygamous marriages including underage girls
- Inter-family marriages
- Severance from ex-member family
- Cross-border movement to evade US scrutiny
- Outside critical material framed as enemy attack
- Children educated within community frameworks
- Internal violence historically suppressed publicly
- One True Prophet doctrine creates absolute leadership authority
- Blood atonement framework normalises violence against dissenters
- Outside world framed as fallen
- Severance from ex-member family
- Fear of internal violence (historical Lambs of God)
- Forced marriages of teenage girls
Lifton's 8 criteria of thought reform
Robert Jay Lifton's 1961 framework, complementary to BITE. Criteria this group exhibits according to the cited sources.
- Demand for PuritySharp world split into pure vs impure; relentless pressure to conform to an absolute standard.
Timeline
- 1955Ervil LeBaron splits from his brother Joel's Church of the Firstborn
- 1972Ervil orchestrates Joel LeBaron's assassination
- 1977Multi-state 'Lambs of God' assassinations
- 2019Mexico cartel massacre of 9 LeBaron family members
Evidence matrix
Structured sources cross-linked to the claims they document. Tiered per the source hierarchy. For free-text citations see the Sources section below.
Sources
- Ben Bradlee Jr & Dale Van Atta, 'Prophet of Blood' (1981) search ↗
- Anna LeBaron, 'The Polygamist's Daughter' (2017) search ↗
- Multiple US and Mexican criminal cases search ↗
- Gender, Sexuality, and Women’s Empowerment in Mormon Fundamentalist Communities — Sexuality and New Religious Movements (2014) — https://doi.org/10.1057%2F9781137386434_2 open ↗
- Reviews: Janet Bennion, Desert Patriarchy: Mormon and Mennonite Communities in the Chihuahua Valley — http://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=1044&context=mormonhistory open ↗
- Ambushed by a Drug War: Mormon Clans in Mexico Find Themselves Targets of the Cartels — https://www.washingtonpost.com/wp-dyn/content/article/2009/07/22/AR2009072203738_2.html?hpid=topnews&sid=ST2009072203833 open ↗
- Plagio de hermano lo llevó a la muerte — http://www.eluniversal.com.mx/estados/72405.html open ↗
- Matan a Benjamín Le Barón, activista contra secuestros — http://www.eluniversal.com.mx/estados/72402.html open ↗
- Plagiarios castigan a pueblo en rebeldía — http://www.eluniversal.com.mx/primera/33267.html open ↗
- Asesinan a líder mormón Benjamín Le Barón — http://www.milenio.com/node/245426 open ↗
- Law-Abiding Mexicans Taking Up Illegal Guns — https://www.npr.org/2012/01/28/145996427/mexican-community-takes-taboo-stance-on-guns open ↗
- Brothers in tiny Mexican town push for changes to nation's strict gun-control laws — http://www.dallasnews.com/news/nationworld/mexico/20121230-brothers-in-tiny-mexican-town-push-for-changes-to-nations-strict-gun-control-laws.ece open ↗
- The Washington Post — https://www.washingtonpost.com/world/the_americas/us-victims-in-mexico-attack-from-mormon-offshoot-community/2019/11/05/61364cb8-0004-11ea-8341-cc3dce52e7de_story.html open ↗
- At Least 9 Members Of Mormon Family Die In Highway Attack In Mexico — https://www.npr.org/2019/11/05/776308311/at-least-9-mormon-family-members-die-in-highway-attack-in-mexico open ↗
- A Mormon family was brutally killed. What we know about the Mexico attack — https://www.usatoday.com/story/news/world/2019/11/05/la-mora-mormon-family-killed-sonora-mexico-what-we-know/4163210002/ open ↗
- At least 9 members of American family killed in Mexico, most of them kids — https://www.cbsnews.com/news/lebaron-mexico-family-reports-murder-relatives-including-children-suspected-drug-cartel-attack-2019-11-05/ open ↗
- Polygamy stunts a woman's mind": "The Sound of Gravel" author Ruth Wariner on her fundamentalist Mormon childhood, becoming a feminist and life after leaving the church — http://www.salon.com/2016/01/03/polygamy_stunts_a_womans_mind_the_sound_of_gravel_author_ruth_wariner_on_her_fundamentalist_mormon_childhood_becoming_a_feminist_and_life_after_leaving_the_church/ open ↗
- An Ordinance, incorporating the Church of Jesus Christ of Latter-day Saints — http://content.lib.utah.edu/cdm4/document.php?CISOROOT=%2Futhisstat&CISOPTR=1756&REC=4&CISOBOX=incorporating open ↗
- Drug Cartels Target Mormon Clans in Mexico — https://www.washingtonpost.com/wp-dyn/content/article/2009/07/22/AR2009072203738.html open ↗
- ‘Daughters of the Cult’: I Was Raised By the ‘Mormon Manson’ — https://www.vice.com/en/article/daughters-of-the-cult-i-was-raised-by-the-mormon-manson/ open ↗
- It’s Official: Mormon Founder Had Up to 40 Wives — https://www.nytimes.com/2014/11/11/us/its-official-mormon-founder-had-up-to-40-wives.html open ↗
- Nuptiality Measures for the White Population of the United States, 1850–1880. — https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3002115/table/T1/ open ↗
- Church of the Lamb of God. — http://www.people.vcu.edu/~dbromley/undergraduate/spiritualCommunity/ChurchOfTheLambOfGod.html open ↗
- Church of the Lamb of God, Reading Links. — http://www.people.vcu.edu/~dbromley/undergraduate/spiritualCommunity/ChurchOfTheLambOfGodReadingsLink.html open ↗
- A Family’s Legacy of Death. — https://www.latimes.com/archives/la-xpm-1992-09-20-vw-1753-story.html open ↗
- Anna LeBaron: How I escaped my father's murderous polygamous cult. — https://www.bbc.com/news/magazine-38526255 open ↗
- Ervil LeBaron, Utah Polygamist, is found dead in his prison cell. — https://www.nytimes.com/1981/08/17/obituaries/ervil-lebaron-utah-polygamist-is-found-dead-in-his-prison-cell.html open ↗
- Dangerous Clan’s Children on the Run. — https://www.latimes.com/archives/la-xpm-1989-11-12-mn-2056-story.html open ↗
- Daughters of the LeBaron cult detail the violence and fear that was a way of life. — https://abcnews.go.com/US/daughters-lebaron-cult-detail-violence-fear-life/story?id=106073158 open ↗
- Why offshoots of the Mormon church fled to Mexico. — https://eu.usatoday.com/story/news/nation/2019/11/06/mexico-family-shooting-ambush-history-mormon-groups-sonora/4175548002/ open ↗
We cite sources by name and outlet rather than fabricating links. Where a source includes its own URL, the open ↗ link opens it directly; otherwise search ↗ runs a Google Scholar query for the cited title — useful for verifying academic sources. For news outlets, search the outlet's own archive.
Change history
Substantive edits logged per the score-updates policy.
- 2026-05-22Phase 1 Batch A: recovery resources expanded from 2 entries to 5 verified entries. Added Sound Choices Coalition, Cherish Families, Freedom of Mind alongside existing Holding Out Help and ICSA. LeBaron-context exits often involve cross-border (US-Mexico) dispersion; the resource set covers the Utah-based clusters where most current diaspora is concentrated.
- 2026-05-20Score band scheme migrated from 4 bands to 5 (Minimal 0–5 / Low 6–12 / Moderate 13–20 / High 21–30 / Extreme 31–40). No CLCI value changed; the new Minimal band was carved out of the bottom of the previous Low band.
Key terms in this profile
Relevant hubs
Curated entry points on CLCI Hub for situations connected to this group.
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Frequently asked questions
Q.Is LeBaron clan polygamist groups a cult?
CLCI Hub deliberately avoids the binary label "cult." Instead it places groups on a transparent 0–40 spectrum of documented control using Steven Hassan's BITE model (Behaviour, Information, Thought, Emotional). LeBaron clan polygamist groups scores 34 out of 40 — "Destructive / Extreme", at high confidence. The score describes documented control patterns, not a judgement of members' sincerity or beliefs; many members do not personally experience the patterns listed.
Q.What is LeBaron clan polygamist groups's CLCI score?
LeBaron clan polygamist groups scores 34 out of 40 on the Cult-Like Control Index, which falls in the "Extreme" band. That total is the sum of four BITE axes — Behaviour 9, Information 7, Thought 8, Emotional 8 — plus a signed modifier of +2 for aggravating or mitigating factors.
Q.Why does LeBaron clan polygamist groups score 34 on the CLCI?
The score reflects publicly documented patterns including: Documented internal assassinations ordered by leadership; Polygamous marriages including underage girls; Inter-family marriages; Severance from ex-member family. These map onto the BITE axes of behaviour, information, thought, and emotional control, and a signed modifier of +2 is applied for factors such as financial demands, leadership accountability, and exit costs. Every claim is backed by the citations in the Sources section on this page.
Q.How reliable is the LeBaron clan polygamist groups rating?
This profile is rated High confidence. High confidence means the score is backed by court records, academic work, and/or sustained investigative journalism. CLCI scores are not fixed — they are revised whenever new public evidence appears, and groups that reform can score lower over time.
Q.Where can I get help regarding LeBaron clan polygamist groups?
If you or someone you care about is affected by LeBaron clan polygamist groups, start with the Recovery resources listed on this page. General cult-aware support is available from the International Cultic Studies Association (icsahome.com) and the Freedom of Mind Resource Center (freedomofmind.com). CLCI Hub is an educational resource, not a crisis service — if anyone is in immediate danger, contact local emergency services.
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