In 1841, during Secularization, Pio Pico and Andres Pico were granted  Rancho San Onofre y Santa Margarita next to the Mission San Juan Capistrano by Alvarado. Three years later, the grant of Rancho Las Flores was added, and the grant renamed Rancho Santa Margarita y Las Flores.
In 1841, during Secularization, Pio Pico and Andres Pico were granted Rancho San Onofre y Santa Margarita near Mission San Juan Capistrano by Alvarado. Three years later, the grant of Rancho Las Flores was added, and the name of the grant changed to Rancho Santa Margarita y Las Flores.