Felipe Santiago Briones (1790 -1840) was a soldier at the San Francisco Presidio. He married Maria Manuela Valencia in 1810. Maria Manuela Valencia's brother, Candelario Valencia, was the grantee of Rancho Acalanes. In 1829, Briones and his family settled on the El Pinole lands, built a home (near what is now the Bear Creek Staging area), and in 1839, petitioned for a grant of El Pinole. When Felipe Briones was killed in 1840, his widow, Maria Manuela Valencia de Briones, petitioned for the land grant in her name. In 1842, Governor Alvarado, made a three square league grant of Rancho Boca de la Cañada del Pinole to María Manuela Valencia and a four square league grant of Rancho El Pinole to Ygnacio Martinez.[3][4]
In 1870, the Briones family sold their lands to Simon and Elias Blum who developed orchards and cultivated fruit.
In 1909, the Peoples' Water Company, the precursor to the East Bay Municipal Utility District, purchased the land for the watershed. The nearby Briones Reservoir was constructed in 1964. The East Bay Regional Parks District later acquired Briones and opened the 6,117-acre (24.75 km2) Briones Regional Park in 1967.
^Ogden Hoffman, 1862, Reports of Land Cases Determined in the United States District Court for the Northern District of California, Numa Hubert, San Francisco