This was the site of Rancho los Guilucos (18,833 acres), granted in 1839 by Governor Juan
Bautista Alvarado to John Wilson and his wife, Ramona Carrillo, sister-in-law
of General Mariano Guadalupe Vallejo. The house, constructed in 1858 by
William Hood for his bride, Elsia Shaw of Sonoma, incorporates the original bricks
fired on the property and has been in continuous use. The property was purchased in 1943
by the California Department of the Youth Authority for Los Guilucos School for Girls.
California Registered Historical Landmark No. 692
Plaque placed by the California State Park Commission in cooperation
with Los Guilucos Citizens' Advisory Committee and the Sonoma
Valley Historical Society.
May 28, 1960