Rancho Paso de Bartolo

Rancho Paso de Bartolo also called Rancho Paso de Bartolo Viejo was a 10,075-acre (40.77 km2) Mexican land grant in present-day Los Angeles County, California given in 1835 by Governor Jose Figueroa to Juan Crispin Perez.

In 1843, Bernardo Guirado, a worker at the mission, acquired 876 acres (4 km2) of Paso de Bartolo from Perez.

After the Mexican-American War, former Governor Pío Pico began purchasing pieces of the estate from the heirs of Perez, and by 1852, he acquired 8,991 acres (36 km2) of the rancho.

[6] 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.

[9] There was some legal dispute over the Guirado and Sepulveda land, and with the possible encroachment on the Rancho Santa Gertrudes grant to the south.

Don Pío Pico , the last Governor of Alta California , acquired Rancho Paso de Bartolo in 1847. His former estate on the rancho is preserved today as the Pío Pico State Historic Park .