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Rancho Santa Margarita y Las Flores

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Title: Rancho Santa Margarita y Las Flores  
Author: World Heritage Encyclopedia
Language: English
Subject: John (Don Juan) Forster, Ranchos of San Diego County, California, Marine Corps Base Camp Pendleton, Pío Pico, Las Flores, California
Publisher: World Heritage Encyclopedia

Rancho Santa Margarita y Las Flores

Rancho Santa Margarita y Las Flores
Rancho Santa Margarita y Las Flores is located in California
Location of Rancho Santa Margarita y Las Flores in California
Location Camp Pendleton
Official name: Santa Margarita Ranch House[1]
Reference no. 1026

Rancho Santa Margarita y Las Flores was a 133,440-acre (540.0 km2) Mexican land grant in present-day northwestern San Diego County, California given by governor Juan Alvarado in 1841 to Andrés Pico and Pio Pico.[2] The grant was located along the Pacific coast, and encompassed present-day San Onofre State Beach and Camp Pendleton.[3][4][5] The site is now registered as California Historical Landmark #1026.[1]


  • History 1
  • Historic sites of the Rancho 2
  • References 3
  • See also 4


In 1841, during Secularization, Pio Pico and Andres Pico were granted 89,742-acre (363.17 km2) Rancho San Onofre y Santa Margarita next to the Mission San Juan Capistrano by Alvarado. Three years later, the grant of Rancho Las Flores was added, and the grant renamed Rancho Santa Margarita y Las Flores. Pio Pico and Andres Pico built the first two rooms of the Ranch House. Pio Pico later lost the land in a horse bet with Jose Andres Sepulveda.

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 Santa Margarita y Las Flores was filed with the Public Land Commission in 1852,[6] and the grant was patented to Pio Pico in 1879.[7]

In 1863, Juan Forster, an Englishman who became a Mexican citizen and married Pio Pico’s sister, paid off Pico’s debts and received the deed to the Rancho Santa Margarita y Las Flores. In 1864, Forster began expanding the Santa Margarita Ranch House to 18 rooms and turned the land into a cattle ranch. Forster lived at Rancho Santa Margarita some 18 years and greatly expanded the house. When Forster died in 1882, his heirs sold the ranch to Irish immigrant James Flood who selected his friend Richard O’Neill to manage the ranch. James Flood died in 1888. In 1906, James Flood, Jr gave O’Neill an undivided half ownership. In 1923, Jerome O' Neill and James Flood, Jr formed a corporation to control the ranch now known as Rancho Santa Margarita.[8]

Historic sites of the Rancho


  1. ^ a b "California Historical Landmark: San Diego County". Office of Historic Preservation. California State Parks. Retrieved 2012-10-13. 
  2. ^ Ogden Hoffman, 1862, Reports of Land Cases Determined in the United States District Court for the Northern District of California, Numa Hubert, San Francisco
  3. ^ Plat of the Rancho Santa Margarita y Las Flores
  4. ^ Rancho de San Onofrio
  5. ^ U.S. Geological Survey Geographic Names Information System: Rancho Santa Margarita y Las Flores
  6. ^ United States. District Court (California : Southern District) 367 SD
  7. ^ Report of the Surveyor General 1844 - 1886
  8. ^ San Onofre State Beach, Development Plan, 1984, pp.13-14

See also

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