Rancho de las Pulgas
Rancho de las Pulgas was a 35,240-acre (142.6 km2) 1795 Spanish land grant in present-day San Mateo County, California to José Darío Argüello. The literal translation is "Ranch of the Fleas", probably named after a village of the local Lamchin people. The grant was bounded by San Mateo Creek on the north and San Francisquito Creek on the south, and extended about one league from San Francisco Bay to the hills. The grant encompassed present-day San Mateo, Belmont, San Carlos, Redwood City, Atherton and Menlo Park.
In 1795, the Spanish Governor of California, Diego de Borica, made the provisional grant of the Las Pulgas to José Darío Argüello. Brothers Luis Antonio Argüello (1784–1830), Santiago Argüello (1791–1862) and Gervasio Argüello were sons of José Darío Argüello (1753–1828). In 1835, Mexican Governor José Castro granted the four square league Rancho de las Pulgas to the widow, Maria Soledad Ortega de Argüello (1797–1874), and heirs of Luis Antonio Argüello.
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 de las Pulgas for twelve square leagues was filed in 1852 with the Public Land Commission by heirs of Luis Antonio Argüello. The Land Commission rejected the claim for twelve square leagues, but confirmed the claim for four square leagues, which was confirmed by the District Court, and affirmed by the US Supreme Court. A claim filed by Gervasio Argüello with the Land Commission in 1852 was rejected. A claim filed by Mowry W. Smith with the Land Commission in 1853 was rejected.
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