Rancho Cañada del Rincon en el Rio San Lorenzo
Rancho Cañada del Rincon en el Rio San Lorenzo was a 5,827-acre (23.58 km2) Mexican land grant in present-day Santa Cruz County, California given in 1843 by Governor Manuel Micheltorena, and confirmed in 1846 by Governor Pío Pico, to Pedro Sainsevain. The name means "valley on a corner on the San Lorenzo River". The grant was north of present-day Santa Cruz on the San Lorenzo River.
Pedro Sainsevain (1818–1904) came to California in 1839 and joined his uncle Jean-Louis Vignes in Los Angeles. In 1843, Sainsevain received a concession for the two square league Rancho Cañada del Rincon en el Rio San Lorenzo grant from Governor Micheltorena, but Sainsevain was not a Mexican citizen, as required by law, until his naturalization on October 7, 1844. The grant was confirmed by Governor Pico in 1846. Sainsevain operated a sawmill on the San Lorenzo River. In 1845, Sainsevain married Paula Suñol (1827-1883), whose father owned Rancho Los Coches near San Jose. In 1848, Sainsevain went to the gold mines on the Tuolumne River.
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 Cañada del Rincon en el Rio San Lorenzo was filed with the Public Land Commission in 1852. Granted originally in the amount of about 8,800 acres (36 km2) by the Mexican government, the grant was patented at 5,827 acres (23.6 km2) to Pedro Sainsevain in 1858.
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