Rancho La Sierra (Yorba)

Bernardo and his brother Tomas (1787–1845) continued to pasture heards even further east, in an area they had named La Sierra.

Nine days later Maria Vicenta Sepulveda, the widow of Bernardo's brother Tomas, also applied for some of the same La Sierra lands.

[4] 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.

The colony was laid out as South Riverside, and in 1896 renamed Corona (Spanish: "Crown") for a 3-mile (5-km) circular drive that is now around the central city and was the site of international automobile races from 1913 to 1916.

[8] Bernardo Yorba expanded his lands further when he purchased Rancho El Rincon from Juan Bandini.