Rancho Arroyo de Las Nueces y Bolbones

Rancho Arroyo de Las Nueces y Bolbones (also called "San Miguel") was a 17,782-acre (71.96 km2) Mexican land grant in present-day Contra Costa County, California given in 1834 by Governor José Figueroa to Juana Sanchez de Pacheco.[1]

1850 map of the rancho (Mt. Diablo at upper left, with north at lower left)

The grant was named after the principal waterway, Arroyo de las Nueces (Walnut Creek), and for the local group of indigenous Americans (Bolbones). The grant was on the western slope of Mount Diablo and includes the present day city of Walnut Creek. Approximately a quarter of the original rancho is now in the Mt. Diablo State Park.[2]

History

Juana Lorenza Sanchez de Pacheco (1776–1853) was the widow of Miguel Antonio Pacheco (1745–1829). Miguel Pacheco, a soldier, was the son of Juan Salvio Pacheco (1729–1777) and Maria Carmen del Valle, who came to San Francisco in 1776 with the De Anza Expedition. He was a cousin of Salvio Pacheco, founder of Concord, California. The Pacheco family used its land for grazing cattle, but did not settle on the rancho.[3][4]

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 Arroyo de Las Nueces y Bolbones was filed with the Public Land Commission in 1852,[5] and the grant was patented to the heirs of Juana Lorenza Sanchez de Pacheco in 1866. The grant was for two leagues (approx. 8857 acres; see Spanish customary units), but was confirmed for nearly four leagues (approx. 17,714 acres or 28 square miles).[6]

Rosa Maria Pacheo, daughter of Miguel Antonio Pacheco, married Jose Maria Sibrian (1798 - ), and their two sons, Jose Ysidro Sibrian (1821 - ) and Jose Ygnacio Sibrian (1822 - ) inherited the rancho. Ygnacio Sibrian, the namesake of the Ygnacio Valley, built the first roofed residence in the valley around 1850. Shortly before John Marsh of Rancho Los Meganos died in 1856, Ygnacio Sibrian and Marsh were involved in a bitter court trial.

Historic sites of the Rancho
  • Old Borges Ranch. The former ranch of early Walnut Creek pioneer Frank Borges
  • Shadelands Ranch. Ranch established by Hiram Penniman. Hiram Penniman arrived in California in 1853, and in 1856 purchased 500 acres (2.0 km2) of land from Encarnación Pacheco, daughter of Juana Sanchez de Pacheco. Shadelands Ranch House is on the National Register #8500191

References
  1. Ogden Hoffman, 1862, Reports of Land Cases Determined in the United States District Court for the Northern District of California, Numa Hubert, San Francisco
  2. Diseño del Rancho Arroyo de los Nueces y Bolbones
  3. Hulaniski, Frederick J, 1917, The History of Contra Costa County, California, The Elms Publishing Co., Berkeley, California
  4. Hoover, Mildred B.; Rensch, Hero; Rensch, Ethel; Abeloe, William N. (1966). Historic Spots in California. Stanford University Press. ISBN 978-0-8047-4482-9.
  5. United States. District Court (California : Northern District) Land Case 46 ND
  6. Report of the Surveyor General 1844 - 1886 Archived 2013-03-20 at the Wayback Machine


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