Rancho Encinal y Buena Esperanza
Scotsman David Spence (1798-1875) came to Monterey in 1824 from Lima, Peru to work for William Hartnell. In 1829, Spence married Maria Adelaida Altagracia Estrada (-1875), a daughter of José Mariano Estrada, grantee of Rancho Buena Vista. Spence was alcalde of Monterey in 1839 in Alta California, and later a member of the California state legislature.
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. As required by the Land Act of 1851, a claim for Rancho Encinal y Buena Esperanza was filed with the Public Land Commission in 1852, and the grant was patented to David Spence in 1862.
His only son, David Steward Spence (1830-1868), who married Refugio Malarin, daughter of Juan Malarin, grantee of Rancho Chualar, died in 1868, leaving three sons and a daughter, who inherited their grandfather’s estate. 
- Ogden Hoffman, 1862, Reports of Land Cases Determined in the United States District Court for the Northern District of California, Numa Hubert, San Francisco
- Diseño del Rancho Encinal y Buena Esperanza
- Hoover, Mildred B.; Rensch, Hero; Rensch, Ethel; Abeloe, William N. (1966). Historic Spots in California. Stanford University Press. ISBN 978-0-8047-4482-9.
- United States. District Court (California : Southern District) Land Case 4 SD
- Report of the Surveyor General 1844 - 1886
- H. S. Foote, 1888, Pen Pictures From The Garden of the World or Santa Clara County, California, Illustrated, pp. 373-374,The Lewis Publishing Company, Chicago