Mission San Francisco de Asís, or Mission Dolores, is the oldest surviving structure in San Francisco and the sixth religious settlement established as part of the California chain of missions. The Mission was founded on June 29, 1776, by Lieutenant José Joaquin Moraga and Francisco Palóu (a companion of Junípero Serra), both members of the de Anza Expedition, which had been charged with bringing Spanish settlers to Alta (upper) California, and evangelizing the local Natives, the Ohlone.HistoryThe settlement was named for St. Francis of Assisi, the founder of the Franciscan Order, but was also commonly known as "Mission Dolores" owing to the presence of a nearby creek named Arroyo de Nuestra Señora de los Dolores, meaning "Our Lady of Sorrows Creek." During the expedition of Juan Bautista de Anza, this site was identified by Pedro Font as the most suitable site for a mission in the San Francisco area.