Santa Margarita de Cortona Asistencia
Misión de Santa Margarita by Henry Chapman Ford, 1881
Location of Santa Margarita de Cortona Asistencia in California
|Location||Santa Margarita, California|
|Name as founded||Asistencia de la Misión de San Luis, Obispo de Tolosa |
|English translation||Sub-Mission to the Mission San Luis Obispo de Tolosa|
|Patron||Saint Margaret of Lavinio and Cortona, Italy |
|Nickname(s)||"San Luis Obispo County's Third Mission"|
|Founding date||1787 |
|Native place name(s)||Trolole |
|Governing body||Private entity|
The Santa Margarita de Cortona Asistencia  was established in 1787 as an asistencia ("sub-mission") to Mission San Luis Obispo de Tolosa, then in the Spanish Las Californias Province. Its site is near the present day city of Santa Margarita, in San Luis Obispo County, central California.
The asistencia compound was located north of the mission and of Cuesta Grade, in the Santa Lucia Mountains, on a site Padre Junípero Serra had previously chosen in 1772. It was named for an Italian saint. It was established for Indian Reductions of the large number of Salinan (Obispeño) Californian Indians, who's southern homeland included the area. The compound also served as an outpost, chapel, and storehouse.
The adobe and stone chapel building measured 120 feet (37 m) by 20 feet (6.1 m), with a chapel and eight auxiliary rooms for the use of the majordomo, his servants, and as quarters for visiting priests. One chamber functioned as a granary for storing mission crops. The Mission Indians were engaged in extensive grain cultivation in the fields around it.
The Santa Margarita Asistencia was secularized along with Mission San Luis Obispo in 1835, and suffered the same neglect that many mission properties did after that time. In 1841, the Mexican land grant for Rancho Santa Margarita was issued to Joaquín Estrada. After the 2 day American capture of Monterey in 1842, General Pío Pico and General José Castro met at the rancho to discuss strategy. During the 1846 Bear Flag Revolt, the forces of Captain John C. Frémont captured an Indian bearing a message at the rancho, from Jose Jesus Pico, the Mexican Pueblo of San Luis Obispo Justice of the Peace, and ordered his execution. In December of that year Frémont also arrested Estrada and others at the rancho, releasing them only after securing their pledges of service to Frémont.
Estrada sold Rancho Santa Margarita in 1861 to Mary and Martin Murphy Jr.,who had come to Alta California with the Stephens-Townsend-Murphy Party in 1844. The Murphys turned over running of the rancho, along with the adjacent Rancho Atascadero and Rancho Asuncion they also owned, to their son Patrick W. Murphy. He later served in the California Assembly and the California State Senate, and was a General in the California National Guard. Murphy erected a barn over the adobe and stone Santa Margarita de Cortona Asistencia to shield it from the elements.
In February, 1889 the town of Santa Margarita was incorporated.
The Santa Margarita de Cortona Asistencia site is a California Historical Landmark. Several of the original stone walls remain standing, having been incorporated into a ranch barn. The site is on the private property of the Santa Margarita Ranch. Tours are occasionally offered, and the site may also be visited during some public Ranch events. 
- California Historical Landmarks in San Luis Obispo County, California
- Mission San Luis Obispo de Tolosa
- Ruscin, p. 59
- Santa Margarita Historical Society
- Ruscin, p. 195
- Ranch history at Santa Margarita Ranch
- Jones, Terry L. and Kathryn A. Klar (eds.) (2007). California Prehistory: Colonization, Culture, and Complexity. Altimira Press, Landham, MD. ISBN 0-7591-0872-2.
- Paddison, Joshua (ed.) (1999). A World Transformed: Firsthand Accounts of California Before the Gold Rush. Heyday Books, Berkeley, CA. ISBN 1-890771-13-9.
- Ruscin, Terry (1999). Mission Memoirs. Sunbelt Publications, San Diego, CA. ISBN 0-932653-30-8.
- "Mission Days: The Mission Rancho (1775-1841)". Santa Margarita Historical Society. Retrieved July 7, 2007.
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