Rancho Las Flores was a 13,316-acre (53.89 km2) Mexican land grant in present-day Tehama County, California given in 1844 by Governor Manuel Micheltorena to William Chard.
The grant was on the west side of the Sacramento River and was bounded by Rancho Barranca Colorado and Coyote Creek on the north and by Rancho Saucos and Elder Creek on the south, and encompassed present-day Gerber and Proberta.
Chard lived in Los Angeles for four years, before he moved to the Monterey area.
[4] Chard was superintendent of the New Almaden quicksilver mine south of San Jose until 1846.
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.