Background
Guerrier was born in Saint Louis, Missouri.
Guerrier was born in Saint Louis, Missouri.
In 1844, he began working for William Bent at Fort Bent on the Santa Fe Trail. In 1845, he acted as interpreter in a meeting near the fort to create a peace treaty between the Cheyenne and the Delaware which had been forced west by the Indian Removal Acting. In 1848, he struck up a business arrangement with Seth East. Ward called Ward and Gurrier.
Ward and Guerrier got the exclusive sutler contract for Fort Laramie in 1851.
In 1852 they moved to a few miles to Register Cliff. Their practice of trading goods for the worn oxen of settlers is sometimes said to make them the first ranchers in Wyoming.
He died when sparks from his pipe hit an open gunpowder keg.