Rancho Ex-Mission San Buenaventura
Rancho Ex-Mission San Buenaventura was a 48,823-acre (197.58 km2) Mexican land grant in present day Ventura County, California given in 1846 by Governor Pio Pico to José de Arnaz (Arnas). The grant derives its name from the secularized Mission San Buenaventura, and was called ex-Mission because of a division made of the lands held in the name of the Mission — the church retaining the grounds immediately around, and all of the lands outside of this are called ex-Mission lands. The grant extended east from present day Ventura, excluding the Rancho San Miguel (Olivas) lands, inland up the Santa Clara River to Santa Paula, between the north bank of the River and Sulphur Mountain.
José de Arnaz (1820–1895), born in Spain, was a trader along the California coast. He opened a store in Los Angeles, and married Maria Mercedes de Avila (1832–1867) in 1847. Avila was the niece of Antonio Ygnacio Avila. With his partner, Narciso Botello, Arnaz leased the extensive lands of Ex-Mission San Buenaventura. In 1846, Governor Pío Pico granted the twelve square league Rancho Ex-Mission San Buenaventura to Arnaz. Later it was claimed that the grant had been sold (which would not have been legal) by Pio Pico to Arnaz. During the Mexican–American War, the Arnaz ownership was not recognized. When Colonel Stevenson arrived in the southern part of California in 1847, he took possession in the name of United States, of the Arnaz land and put the property in the custody of another leasee. In 1849, Arnaz bought part of Rancho Rincon de los Bueyes in Los Angeles, and sold Rancho Ex-Mission San Buenaventura to Manuel Antonio Rodriguez de Poli in 1850.
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 Ex-Mission San Buenaventura was filed with the Public Land Commission in 1852, and the grant was patented to Manuel Antonio Rodriguez de Poli in 1874.
Poli sold the property to the San Buenaventura Commercial, Manufacturing and Mining Company. In 1874, the Rancho Ex-Mission San Buenaventura not yet owned by settlers, was sold to Rudolph Steinbach & Horace W. Carpentier. After the patent was issued, a dispute arose over the boundary between Rancho Ex-Mission San Buenaventura and the adjacent Rancho Santa Paula y Saticoy.
- Ogden Hoffman, 1862, Reports of Land Cases Determined in the United States District Court for the Northern District of California, Numa Hubert, San Francisco
- Hoover, Mildred B.; Rensch, Hero; Rensch, Ethel; Abeloe, William N. (1966). Historic Spots in California. Stanford University Press. ISBN 978-0-8047-4482-9.
- Recuerdos de Jose Arnaz
- Auguisola vs Jose de Arnaz, 1876, Reports of Cases Determined in the Supreme Court of the State of California, Volume 51, pp.435-439, Bancroft-Whitney Company
- Romance of a Rancho The Beverly Hills Citizen,Volume XVII – No. 2,June 23, 1939, pages 9, 12
- United States. District Court (California : Southern District) Land Case 318 SD
- Report of the Surveyor General 1844 - 1886
- "Map of the Rancho Ex-Mission San Buenaventura." 2 MR 103. Ventura County Recorder Surveyed Sep. 1876?. Recorded 7 September 1882. Retrieved January 5, 2014 from CountyView GIS.
- More v. Steinbach, U.S. Supreme Court, 127 U.S. 70 (1888)