Rancho Pauba was a 26,598-acre (107.64 km2) Mexican land grant in present-day Riverside County, California given in 1844 by Governor Manuel Micheltorena to Vicente Moraga and Luis Arenas.
[2][3] Vincent Moraga and Luis Arenas, both officials in Pueblo de Los Angeles, were granted six square leagues in the Temecula Valley that was formerly part of the lands of the Mission San Luis Rey.
With the cession of California to the United States following the Mexican-American War, the 1848 Treaty of Guadalupe Hidalgo provided that the land grants would be honored.
[6] In 1872 sheep ranchers Juan and Ezekial Murrieta, began to move their flocks away from Merced in search of water.
In 1964, the Vails sold the ranch to the Kaiser Steel Company, which master-planned the community of Rancho California, which now comprises the cities of Temecula and Murrieta.