Rancho Ausaymas y San Felipe
Rancho Ausaymas y San Felipe was a 35,504-acre (14,368 ha) Mexican land grant in present day San Benito County and Santa Clara County, California a consists of two square leagues (San Felipe) given in 1833 by Governor José Figueroa and two square leagues (Ausaymas) given in 1836 by Governor Nicolás Gutiérrez to Francisco Perez Pacheco. An augmentation of three square leagues was given in 1836 by Governor Gutiérrez. The grant was along the Pacheco Pass east of present-day Gilroy
Francisco Perez Pacheco (1793–1860), born in Mexico, came to Monterey in 1819, with his wife Feliciana González (1798–1857). He was a carpenter and wagon maker for the Spanish army. He later held various positions of responsibility, both military and civilian, in Monterey.
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 the four square league Rancho Ausaymas y San Felipe  and a claim for the three square league augmentation was filed with the Public Land Commission in 1852. The grant was patented to Francisco Perez Pacheco in 1859.
Francisco Perez Pacheco continued to add to his holdings. He was granted the adjoining Rancho Bolsa de San Felipe in 1840, and bought Rancho San Justo in 1850. In 1843 Francisco Pacheco’s son, Juan Perez Pacheco (1823–1855), was granted Rancho San Luis Gonzaga, which abutted Rancho Ausaymas y San Felipe on the east. In 1855 the son died, and the property went to Francisco Pacheco. In 1840, his daughter María Jacinta Pacheco (1813 – ) married Sebastián Nuñez, grantee of Rancho Orestimba y Las Garzas.
Upon Francisco Pacheco's death in 1860, as the only surviving child, Ysidora inherited most of the Pacheco holdings. In 1850, María Ysidora Pacheco (1829–1892) married Mariano Malarin (1827–1895), son of the grantee of Rancho Chualar. When María Ysidora Pacheco died in 1892, her estate consisted of Rancho San Luis Gonzaga and half of Rancho Ausaymas y San Felipe.
- 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 Ausaymas y San Felipe
- Early Santa Clara Ranchos, Grants, Patents and Maps
- Biofile of Building Artisans, who Worked on the Northern Spanish Borderlands of New Spain and Early Mexico Compiled by Mardith Schuetz-Miller
- Marjorie Pierce,1981, East of the Gabilans, Western Tanager Press, ISBN 978-0-934136-11-2
- Hoover, Mildred B.; Hero & Ethel Rensch, and William N. Abeloe (1966). Historic Spots in California. Stanford University Press. ISBN 978-0-8047-4482-9.
- United States. District Court (California : Southern District) Land Case 79 SD
- United States. District Court (California : Southern District) Land Case 78 SD
- Report of the Surveyor General 1844 - 1886
- Portraits of Isidora Pacheco and Mariano Malarín by Leonardo Barbieri
- Will of Isadora Pacheco Malarin, Salinas Weekly Index, Thursday, August 25, 1892