José de Jesús Pico (1806-1892), a member of the Pico family of California (a prominent Californio family), was the son of Jose Dolores Pico and Isabel Cota. He was born in Monterey in 1806. His brother, Antonio Maria Pico, was the grantee of Rancho Pescadero. Another brother was the bandit Salomon Pico. José de Jesús Pico was a soldier, and married Francisca Zaviera Trinidad Antonia Gabriela Villavicencio (b. 1813) in 1832. Originally part of the Mission San Miguel coastal grazing land, the eleven square league Rancho Piedra Blanca was granted to Pico in 1840. In 1841 Pico was appointed administrator of Mission San Miguel.[3]
Pico sold parts of the rancho to Mariano Pacheco, Juan Castro, Peter Gillis and others. In 1865, George Hearst (1820 – 1891), a successful miner during the California Gold Rush era and later a US Senator, started to acquire land in the area. By 1865, 17,000 acres (69 km2) of the rancho had already been sold, but Hearst was able to buy 30,000 acres (121 km2) of Rancho Piedra Blanca from Pico. Hearst continued to buy lots whenever they became available. He also bought most of Rancho San Simeon, and part of Rancho Santa Rosa.
^Ogden Hoffman, 1862, Reports of Land Cases Determined in the United States District Court for the Northern District of California, Numa Hubert, San Francisco