Rancho Santa Margarita y Las Flores was a Mexican land grant in present-day northwestern

San Diego County, California San Diego County (), officially the County of San Diego, is a county in the southwestern corner of the U.S. state of California. As of the 2020 census, the population was 3,298,634, making it California's second-most populous county and the fi ...

given by governor Juan Alvarado in 1841 to Andrés Pico and

Pio Pico Pio may refer to: Places * Pio Lake, Italy * Pio Island, Solomon Islands * Pio Point, Bird Island, south Atlantic Ocean People * Pio (given name) * Pio (surname) * Pio (footballer, born 1986), Brazilian footballer * Pio (footballer, born 1 ...

. The grant was located along the Pacific coast, and encompassed present-day

San Onofre State Beach San Onofre State Beach (''San Onofre'', Spanish for " St. Onuphrius") is a state park in San Diego County, California. The beach is south of San Clemente on Interstate 5 at Basilone Road. The state park is leased to the state of California by ...

and

Camp Pendleton Marine Corps Base Camp Pendleton is the major West Coast base of the United States Marine Corps and is one of the largest Marine Corps bases in the United States. It is on the Southern California coast in San Diego County and is bordered by Oc ...

. The site is now registered as

California Historical Landmark A California Historical Landmark (CHL) is a building, structure, site, or place in California that has been determined to have statewide historical landmark significance. Criteria Historical significance is determined by meeting at least one of ...

#1026.

History

In 1841, during

Secularization In sociology, secularization (or secularisation) is the transformation of a society from close identification with religious values and institutions toward non-religious values and secular institutions. The ''secularization thesis'' expresses the ...

, Pio Pico and Andres Pico were granted Rancho San Onofre y Santa Margarita next to the

Mission San Juan Capistrano Mission San Juan Capistrano ( es, Misión San Juan Capistrano) is a Spanish mission in San Juan Capistrano, Orange County, California. Founded November 1, 1776 in colonial ''Las Californias'' by Spanish Catholic missionaries of the Franciscan O ...

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 The act of cession is the assignment of property to another entity. In international law it commonly refers to land transferred by treaty. Ballentine's Law Dictionary defines cession as "a surrender; a giving up; a relinquishment of jurisdictio ...

of California to the United States following the

Mexican–American War The Mexican–American War, also known in the United States as the Mexican War and in Mexico as the (''United States intervention in Mexico''), was an armed conflict between the United States and Mexico from 1846 to 1848. It followed the 1 ...

, the 1848

Treaty of Guadalupe Hidalgo The Treaty of Guadalupe Hidalgo ( es, Tratado de Guadalupe Hidalgo), officially the Treaty of Peace, Friendship, Limits, and Settlement between the United States of America and the United Mexican States, is the peace treaty that was signed on 2 ...

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 The California Land Act of 1851 (), enacted following the Treaty of Guadalupe Hidalgo and the admission of California as a state in 1850, established a three-member Public Land Commission to determine the validity of prior Spanish and Mexican la ...

in 1852, and the grant was

patented A patent is a type of intellectual property that gives its owner the legal right to exclude others from making, using, or selling an invention for a limited period of time in exchange for publishing an enabling disclosure of the invention."A p ...

to Pio Pico in 1879. In 1863,

Juan Forster Don Juan Forster (born ''John''; 1814 – February 20, 1882) was an English-born Californio ranchero and merchant. Born in England, he emigrated to Mexico at age 16 and became a Mexican citizen. Soon after, he moved to California (then a prov ...

, 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 it. James Flood died in 1888. In 1940, 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.San Onofre State Beach, Development Plan, 1984, pp.13-14
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Historic sites of the Rancho

Las Flores Estancia The Las Flores Estancia (also known as Las Flores Asistencia) was established in 1823 as an ''estancia'' ("station"). It was part of the Spanish missions, asistencias, and estancias system in Las Californias—Alta California. Las Flores Estancia ...

History

Historic sites of the Rancho

References

See also