El Rancho Rinconada de los Gatos was a 6,631-acre (26.83 km2) Mexican land grant in present-day Santa Clara County, California made in 1840 by Governor Juan Alvarado to Jose Maria Hernandez and Sebastian Fabian Peralta.
[1] Located in the southern San Francisco Bay Area, the grant included present-day Los Gatos and Monte Sereno, along with about a third of Campbell.
Sebastian Peralta and José Hernandez, brothers-in-law married to two Sibrian sisters, were granted the one and one half square league Rancho Rinconada de Los Gatos in 1840.
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.
Three cities have been incorporated containing large sections of land from the grant: Los Gatos in 1887, Campbell in 1952, and Monte Sereno in 1957.