It was granted in 1845 by Governor Pío Pico to Antonio Chaves (Chávez).[1] The grant extended along the San Antonio River southeast of present-day Jolon. Much of the grant is under water, inundated by the creation of the San Antonio Reservoir. [2][3]
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 Pleyto was filed with the Public Land Commission in 1852,[6][7] and the grant was patented to William S. Johnson and Preston K. Woodside in 1872.[8]
William Pinkerton (1843-1918) bought a large portion of Rancho Pleyto in 1868, and founded the town of Pleyto, which is now completely under water, inundated by the creation of Lake San Antonio.
^Ogden Hoffman, 1862, Reports of Land Cases Determined in the United States District Court for the Northern District of California, Numa Hubert, San Francisco
^Harlan Hague, David J. Langum, 1995, Thomas O. Larkin: A Life of Patriotism and Profit in Old California, University of Oklahoma Press, ISBN978-0-8061-2733-0