RANCHO EL SOBRANTE
LAMBERT M. SURHONE, MARIAM T. TENNOE, SUSAN F. HENSSONOW
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Rancho El Sobrante was a 20,565-acre (83.22 km2) Mexican land grant in present day Contra Costa County, California given in 1841 by Governor Juan Alvarado to Juan Jose Castro and Victor Castro.
The name means "left over " in Spanish-the grant's boundaries were determined by the boundaries of the surrounding grants: San Antonio, San Pablo, El Pinole, La Boca de la Canada del Pinole, Acalanes, and La Laguna de los Palos Colorados.
This grant included the area between present day El Sobrante and Orinda.
Brothers Juan Jose Castro (1803-1869) and Victor Ramon Castro (1817-1897) were among the eleven children of Francisco Maria Castro (1775-1831) and Maria Gabriela Berreyesa (1780-1851).
Francisco Castro had been a soldier at San Francisco, who after serving as alcalde and in other public offices, was granted Rancho San Pablo in 1823.
Juan Castro and Victor Castro served in the San Francisco militia.
