Church of the Firstborn (LeBaron family)

Church of the Firstborn
of the Fulness of Times
TypeLatter Day Saint movement
ClassificationMormon fundamentalism
TheologyNontrinitarian
GovernanceHierarchical
HeadquartersColonia LeBarón, Chihuahua, Mexico
FounderJoel LeBaron
OriginSeptember 21, 1955
Salt Lake City, Utah, United States
Branched fromApostolic United Brethren
and mainstream LDS Church
SeparationsChurch of the Firstborn (Rival entity founded by Ross Wesley LeBaron, December 1955. By 1962 its missionary work subsumed to a degree into that of the Fulness of Times')
Church of the First Born of the Lamb of God (founded by Ervil LeBaron, 1972)
Informal schisms:
Unknown
Number of followers"A few hundred" in Chihuahua and as many in the Salt Lake City area
 to, perhaps, 1,000
Other name(s)Church of the Firstborn, or
"LeBaron group"
PublicationsThus Joel taught. 1983.
Church Of The Firstborn Of The Fulness Of Times, Ingólfur Guðbrandsson (2008). Thus saith the Lord. ISBN 9780615213903.
Church of the Firstborn
(Ross Wesley LeBaron's
and mutually rival successors)
HeadquartersOriginally Salt Lake City, Utah (present headquarters disputed)
FounderRoss Wesley LeBaron
OriginDecember 1955
Salt Lake City, Utah, United States
Branched fromApostolic United Brethren
and mainstream LDS Church
Number of followersUnknown. (Note: Includes a hundred or more in Collier group; additional number in Green group)
Other name(s)"Order of God,"
"Collier group,"
"Green group"
etc.
PublicationsDoctrine of the priesthood. Vol. 1–18 (+?). ISBN 9780934964425.
Official websiteChurch-of-the-Firstborn.org

The Church of the Firstborn (or the "LeBarón family") is a grouping of competing factions of a Mormon fundamentalist polygamous family community that had settled in Chihuahua, Mexico, by Alma Dayer LeBaron Sr. by 1924.

Factions accepting leadership succession by some of Alma Dayer LeBaron Sr.'s sons self-describe as members of the Church of the Firstborn, without a legally formalized organization. What became over time the most substantial faction is that of Church of the Firstborn of the Fulness of Times, often shortened as the Church of the Firstborn, which was founded in September 1955 by three of Alma's sons, Joel, R. Wesley, and Floren LeBaron.

Since its founding, the order's most notable enclave has been within the jurisdiction of Galeana Municipality, Chihuahua. The LeBarons christened the LeBaron ranch Colonia LeBarón in the 1950s. Especially in more recent years, it is a minor segment of the order that engages in the practice of polygamy.

A substantial fraction of residents residing on and nearby order members' landholdings at Colonia LeBarón are not affiliated with the order, many of them identifying themselves on census reports as Roman Catholic and most of the remainder as evangélico (Protestant). A community that has inter-married but separate beliefs to Colonia LeBarón's is a three-hour drive away in rancho La Mora, 150 full-time residents strong, in Sonora.