Rancho San Pablo was a 17,939-acre land grant in present-day Contra Costa County, California given in 1823 by Governor Luís Antonio Argüello to Francisco María Castro, a former soldier at the San Fran
Rancho San Pablo sign on San Pablo Avenue at or near the boundary between two counties, Alameda and Contra Costa
Juan Bautista Valentín Alvarado y Vallejo usually known as Juan Bautista Alvarado, was a Californio politician who served as governor of Alta California from 1837 to 1842. Prior to his term as governo
Governor Alvarado House, a landmark in Monterey, California
The Alvarado Adobe in San Pablo, California
Manuel Micheltorena assumed power from Alvarado in 1842, amid tensions with the United States, but was later defeated by Alvarado at the Battle of Providencia in 1845.