Rancho San Lorenzo

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Rancho San Lorenzo was a 26,722-acre (108.14 km2) Mexican land grant given in 1841 by Governor Juan Alvarado to Guillermo Castro a career soldier posted to the Pueblo of San José. The land grant included present day Hayward, San Lorenzo, and Castro Valley, including Crow Canyon, Cull Canyon, and Palomares Canyons.

plaque outside the original Hayward City Hall building, at Alex Giualini Plaza


The grant was located on the route of El Camino Viejo.

Castro's grant was patented in 1865.[1] Soon after, Castro began to sell off his land to pay debts. The last of his holding was sold in a sheriff's sale in 1864 to Faxon Atherton. Atherton in turn began selling off his portion in smaller parcels.[2]

Rancho San Lorenzo (Sota)[edit]

Guillermo and Maria Louisa Peralta Castro owned Rancho San Lorenzo Alta. Francisco and Barbara Soto owned an adjacent rancho called Rancho San Lorenzo Baja - sometimes called San Lorenzito, or Little San Lorenzo. Barbara Soto was Guillermo Castro's sister.[3] Soto's grant was patented at 6,686 acres (27 km2) in 1877.

See also[edit]


  1. ^ Report of the Surveyor General 1844 - 1886 Archived 2009-05-04 at the Wayback Machine
  2. ^ Lorge, L, Phelps, R, Weston, D. "Castro Valley" Arcadia Publishing, 2005. 128 pp.
  3. ^ Rancho San Lorenzo Alta and Rancho San Lorenzo Baja Archived 2010-05-16 at the Wayback Machine

External links[edit]

Coordinates: 37°42′14″N 122°04′44″W / 37.704°N 122.079°W / 37.704; -122.079