John C. Frémont(1813 — 1890)

John Charles Frémont

États-Unis

7 min read

ExplorationPoliticsMilitaryExplorateur/trice19th CenturyNineteenth-century United States, during the era of westward expansion (Manifest Destiny), the conquest of California, and the tensions leading up to the Civil War.

American explorer, military officer and politician nicknamed “the Pathfinder.” He mapped the American West and the Oregon Trail, played a role in the conquest of California, and then became the first Republican candidate in the 1856 presidential election.

Frequently asked questions

What you need to remember is that John C. Frémont (1813-1890) was not only an explorer, but a true architect of Manifest Destiny. Nicknamed "the Pathfinder," he mapped the American West with unprecedented precision, guiding thousands of pioneers toward Oregon and California. Less a lone adventurer than a scientist in uniform, he belonged to the U.S. Army Corps of Topographical Engineers. What makes him singular is that he combined exploration, politics, and the military: he took part in the conquest of California, was the first Republican presidential candidate in 1856, and proclaimed a local emancipation of slaves as early as 1861.

Key Facts

  • 1842-1846: leads several expeditions to map the American West (Rocky Mountains, Oregon Trail, Great Basin)
  • 1846: takes part in the conquest of California during the Mexican-American War (Bear Flag Revolt)
  • 1850: becomes one of the first two senators for the State of California
  • 1856: first Republican Party candidate in the presidential election, defeated by James Buchanan
  • 1861: Union general at the start of the Civil War, controversial for having proclaimed the emancipation of enslaved people in Missouri

Works & Achievements

Report of the Exploring Expedition to the Rocky Mountains (1843)

Account of the first expedition along the Oregon Trail, published by Congress and read by thousands of future migrants.

Report of the Exploring Expedition to Oregon and North California (1845)

Report on the second expedition, accompanied by accurate maps; a genuine best-seller that guided the settlement of the West.

Maps of the West drawn with Charles Preuss (1845)

The first reliable maps of the Oregon and California trails, which transformed geographical knowledge of the continent.

Geographical Memoir upon Upper California (1848)

A geographical memoir on California in which Frémont officially named the “Golden Gate.”

Republican Presidential Candidacy (1856)

Frémont became the Republican Party's first candidate for the presidency, running on a platform opposing the extension of slavery.

Missouri Emancipation Proclamation (1861)

An act freeing the slaves of Missouri's rebels, a bold forerunner of the national Emancipation of 1863, overruled by Lincoln.

Memoirs of My Life (1887)

Autobiography in which Frémont recounts his expeditions and his public career.

Anecdotes

In 1841, the young lieutenant Frémont secretly married Jessie Benton, daughter of the powerful senator Thomas Hart Benton, who opposed the marriage. The senator, furious at first, eventually forgave the couple and became his son-in-law's greatest political supporter, helping fund his expeditions to the West.

The accounts of his expeditions, written jointly with Jessie, sold like best-sellers and were reprinted by Congress. Thousands of families set out for Oregon and California following these reports as genuine travel guides, which earned Frémont his nickname of “The Pathfinder.”

In 1846, while gazing at the strait separating the Pacific Ocean from San Francisco Bay, Frémont named it the “Golden Gate,” well before the Gold Rush of 1849. The famous bridge built a century later, the Golden Gate Bridge, thus owes its name to the explorer.

During the conquest of California, Frémont found himself caught in a clash of authority between two superiors, General Kearny and Commodore Stockton. Court-martialed for insubordination in 1848 and found guilty, he was pardoned by President Polk but resigned from the army, his honor wounded.

In 1856, Frémont became the very first candidate of the young Republican Party for the presidency of the United States, with the slogan “Free Soil, Free Men, Frémont.” Opposed to the expansion of slavery, he lost to James Buchanan, but his showing paved the way for Lincoln's victory four years later.

Primary Sources

Report of the Exploring Expedition to the Rocky Mountains (1843)
I sprang upon the summit, and another step would have precipitated me into an immense snow field... We had climbed the loftiest peak of the Rocky Mountains and unfurled the national flag where flag had never waved before.
Geographical Memoir upon Upper California (1848)
To this gate I gave the name of “Chrysopylae,” or “Golden Gate,” for the same reasons that the harbor of Byzantium was called Chrysoceras, or Golden Horn.
Proclamation of Martial Law in Missouri (August 30, 1861)
The property, real and personal, of all persons in the State of Missouri who shall take up arms against the United States... is declared confiscated to the public use, and their slaves, if any they have, are hereby declared freemen.
Memoirs of My Life (1887)
The great object was to open a practicable road across the continent to the Pacific Ocean, and to link by knowledge the still unknown lands of our territory.

Key Places

Savannah, Georgia

Port city in the American South where Frémont was born in 1813.

Fremont Peak, Wind River Range (Wyoming)

Peak in the Rocky Mountains climbed during the first expedition of 1842, where Frémont raised the American flag. The peak now bears his name.

Golden Gate, San Francisco Bay

Strait that Frémont named the “Golden Gate” in 1846, the setting for his role in the conquest of California.

St. Louis, Missouri

Gateway to the West, the starting point of his expeditions and the seat of his military command in 1861.

San Juan Mountains, Colorado

Snow-covered range where the disastrous fourth expedition (1848-49) became lost, causing the deaths of several men from cold and hunger.

New York

City where Frémont died in 1890, in difficult financial circumstances.

See also