1846–47 Mormon migration

1846–47 Mormon migration
Name	1846–47 Mormon migration
Date	1846–1847
Location	United States, Iowa Territory, Nebraska Territory, Wyoming Territory, Great Basin
Participants	The Church of Jesus Christ of Latter-day Saints, Brigham Young, Latter Day Saints
Outcome	Establishment of Salt Lake City, foundational settlement of the Great Basin and demographic shift in the American West

1846–47 Mormon migration was the organized westward exodus of members of The Church of Jesus Christ of Latter-day Saints from Nauvoo, Illinois to the Great Basin, undertaken under the direction of Brigham Young and other leaders following the murder of Joseph Smith. The movement involved thousands of migrants, militia units, wagon companies, and scouting parties who traversed routes across the Missouri River, Loup River, Platte River, South Pass and culminated in the settlement of the Salt Lake Valley. The migration shaped settlement patterns in the American Old West and intersected with contemporaneous events like the Mexican–American War and the Oregon Trail migrations.

Background and Causes of the Migration

Persecution of members of The Church of Jesus Christ of Latter-day Saints in Missouri and at Nauvoo, Illinois after the 1844 death of Joseph Smith precipitated an exodus, as Brigham Young, Heber C. Kimball, Orson Pratt, Wilford Woodruff, and John Taylor coordinated responses to threats posed by local militias, legal actions, and vigilante violence. Competing pressures from state and territorial authorities including officials in Illinois and interactions with figures such as Thomas Ford and incidents involving the Danites informed the decision to seek a remote refuge. Strategic considerations about proximity to United States territorial boundaries, access to water and forage near the Great Salt Lake, and the precedent of communal migrations like those along the Oregon Trail and driven by entrepreneurs such as John Jacob Astor influenced leader deliberations.

Organization and Leadership

Leadership for the migration centered on the Quorum of the Twelve Apostles with Brigham Young acting as presiding leader, assisted by Heber C. Kimball, Orson Hyde, Willard Richards, George A. Smith, and captains of hundreds including Edward Hunter, James Allen, and Isaac Haight. Military-style organization drew upon models used by earlier Mormon militias and frontier militias such as those in Illinois. The Mormon Battalion enlistment and liaising with United States Army officers including Stephen W. Kearny and James Shields affected manpower decisions; recruitment of emigrant companies, appointment of wagon masters, and creation of supply depots at staging points like Council Bluffs, Iowa and Winter Quarters, Nebraska were overseen by ecclesiastical leaders in coordination with civic agents such as Brigadier General James Allen. Financial mechanisms included communal provisioning by the Relief Society alongside private contributions from merchants like Pierre Chouteau Jr. and John C. Fremont-era suppliers.

Route and Timeline (1846–1847)

Leaving Nauvoo in early 1846, advance parties crossed the Mississippi River to Iowa and established Winter Quarters near Council Bluffs, Iowa and the Missouri River; scouting expeditions traced paths along the Platte River corridor and over South Pass into the Rocky Mountains. The principal overland push began in spring 1847 with brigades following routes similar to the Oregon Trail and meeting topographical challenges noted by earlier explorers like John C. Fremont and Jedediah Smith. Key dates include departure from Winter Quarters in 1846, the wintering and staging at Garden Grove, Iowa and Mount Pisgah, Iowa, the 1846–1847 crossing of Fort Laramie, the trek across Wyoming Territory, and the July 1847 arrival of vanguard parties into the Salt Lake Valley. The timeline intersected with the Mexican–American War and expansionary policies of the United States government under figures such as James K. Polk.

Life on the Trail: Conditions and Logistics

Emigrants faced scarcity of food, exposure, disease including scurvy and cholera, and hazards from river crossings and prairie weather while relying on wagons, handcarts, and pack animals; logistics were managed through wagonmasters like William Clayton and supply agents such as John Taylor. Communal care mechanisms drew on institutions like the Relief Society and leaders including Brigham Young and Heber C. Kimball to allocate provisions, organize nursing, and coordinate handcart companies later modeled by Edward Martin and Brigham H. Roberts-era chroniclers. Navigation used guides familiar with trails established by Hudson's Bay Company trappers, Mountain Men, and explorers including Kit Carson and Jim Bridger, while trade and resupply occurred at posts like Fort Bridger and Fort Laramie. The Mormon practice of organized companies, religious meetings on the trail, and codified rules for sick care exemplified overlapping religious and frontier survival strategies.

Encounters with Indigenous Peoples and Government Authorities

The migration involved interactions with Indigenous nations such as the Otoe people, Missouria people, Lakota people, Shoshone, Ute, and Paiute people ranging from trade and cooperation to tension over grazing and water; intermediaries included interpreters who had worked with agencies like the Bureau of Indian Affairs. Encounters with United States Army detachments, Missouri River steamboat operators, and territorial officials sometimes produced negotiated access to crossings and supplies, while incidents at waypoints involved figures like Fort Laramie commanders and traders such as Jesse Chisholm who facilitated commerce. The 1846–1847 movement also occurred against the backdrop of treaty processes exemplified by agreements like the Treaty of Fort Laramie and the shifting sovereignty resulting from the Mexican Cession.

Arrival in the Salt Lake Valley and Immediate Settlement

The July 1847 vanguard, including leaders Brigham Young, Heber C. Kimball, Willard Richards, Orson Pratt, and surveyors such as Almon W. Babbitt, entered the Salt Lake Valley and conducted fast surveys to assess water, arable land, and strategic positioning relative to the Great Salt Lake. Initial settlement actions involved town planning influenced by Joseph Smith-era concepts of Zion and grid systems later codified in Salt Lake City platting, allocation of irrigable parcels, construction of canals influenced by engineers familiar with Mormon irrigation, and establishment of civic structures including wards and stakes under leaders like Edward Hunter and John Taylor. Early governance arrangements balanced ecclesiastical authority with territorial organizational steps that presaged the creation of the Utah Territory under national figures such as Millard Fillmore.

Legacy and Demographic Impact of the Migration

The migration established a durable Latter Day Saint settlement in the Great Basin that reshaped settlement geography across the American West, led to the founding of dozens of towns such as Provo, Utah, Ogden, Utah, St. George, Utah, and stimulated colonization patterns later tied to the Transcontinental Railroad and economic networks involving merchants like Brigham Young and Philo T. Farnsworth-era infrastructure. Demographically, the exodus altered population densities in Illinois, Iowa, Nebraska Territory, and the Great Basin while contributing to patterns of migration observed in the Manifest Destiny era under presidents like James K. Polk. Cultural and political legacies included the institutionalization of church-led colonization, legal conflicts that culminated in national disputes such as the Utah War, and historiographic debates engaging scholars working on American West studies, religious history, and migration scholarship by historians referencing primary accounts by Orson Pratt and Wilford Woodruff.

Category:History of the Latter Day Saint movement Category:Migrations to the United States