Camulos was located at the western boundary of the rancho and was originally a Tataviam Indian village known as Kamulus. The present 1,800 acre Camulos Ranch, established by Ygnacio del Valle in 1853, was carved out of the 48,612 acre Rancho San Francisco, granted in 1839 to Ygnacio's father Antonio del Valle, majordomo and administrator of Mission San Fernando.
