Rancho Laguna de San Antonio was a 24,903-acre (100.78 km2) Mexican land grant in present-day Marin County and Sonoma County, California given in 1845 by Governor Pío Pico to Bartolomé Bojorquez.
[2][3][4] Bartolomé Bojórquez (1780–1863) was the son of Pedro Antonio Bojorques, who came to California with the De Anza Expedition.
In 1803, Bartolomé married Maria Nicolasa Linares (1784–1869) and they had 7 children (2 male and 5 female).
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.
[7] In 1851, Bojorquez gave a one-ninth undivided interest in the rancho to each of his seven children, and one each for himself and his wife.