Joaquin Murrieta, the famous Californio bandit known as the "Robin Hood of El Dorado", is killed.

Joaquin Murrieta Carrillo, also called the Robin Hood of the West or the Robin Hood of El Dorado, was a Mexican figure of disputed historicity. The novel The Life and Adventures of Joaquín Murieta: The Celebrated California Bandit (1854) by John Rollin Ridge is ostensibly his story.

Californios are Hispanic Californians, especially those descended from Spanish and Mexican settlers of the 17th through 19th centuries before California was annexed by the United States. California's Spanish-speaking community has resided there since 1683 and is made up of varying Spanish and Mexican origins, including criollos, Mestizos, Indigenous Californian peoples, and small numbers of Mulatos. Alongside the Tejanos of Texas and Neomexicanos of New Mexico and Colorado, Californios are part of the larger Spanish-American/Mexican-American/Hispano community of the United States, which has inhabited the American Southwest and the West Coast since the 16th century. Some may also identify as Chicanos, a term that came about in the 1960s.