Rancho San Emidio

Rancho San Emidio was a 17,710-acre (71.7 km2) Mexican land grant in present-day Kern County, California given in 1842 by Governor Juan Alvarado to José Antonio Dominguez.

Their daughter, Maria Antonia Dominguez, was later the grantee of Rancho Sisquoc (to west near present-day Lompoc).

José Antonio Dominguez received the four square league Rancho San Emidio in 1842.

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.

In 1860, the Frémont half share went to his daughter, Frances Cornelia Fremont Porter, who in 1868 sold to Edward Fitzgerald Beale, owner the Tejon Ranch.