Margarite Larre Amestoy (Mrs. Peter) on Rancho Los Encinos around 1906. In 1889, Domingo Amestoy bought the Rancho. This was the last time the 4,460 acre ranch was sold as a whole. In 1916, the Amestoy family sold 1,170 acres which would eventually become the community of Encino. Rancho Los Encinos. San Fernando Valley History Digital Library.