Rancho Collayomi

Rancho Collayomi (also called Rancho Callayomi) was a 8,242-acre (33.35 km2) Mexican land grant in present-day Lake County, California given in 1844 by Governor Manuel Micheltorena to Robert T. Ridley. Rancho Collayomi was one of three land grants (along with Rancho Lupyomi and Rancho Guenoc) in Lake County. Lake County was formed in 1861 of land taken mainly from Napa County and the northwest portion taken from Mendocino County.