Rancho Llano Seco
Rancho Llano Seco was a 17,767-acre (71.90 km2) Mexican land grant in present-day Butte County, California given in 1845 by Governor Pio Pico to Sebastian Keyser (Kayser). Llano Seco means "dry plains" in Spanish. The grant extended along the east bank of the Sacramento River south of present-day Chico.
The four square league grant, provisionally made in 1844 by Governor Manuel Micheltorena, was confirmed in 1845 by Governor Pico. Sebastian Keyser (d.1850), born in Austria, was a trapper who had accompanied John Sutter in 1838 from Missouri, through New Mexico to California. Keyser went to Oregon but returned in 1841 to work for Sutter at his Rancho New Helvetia. In 1845, Sebastian Keyser became owner of a half interest in Rancho Johnson. He settled on the Bear River, and married Elizabeth Rhoads. Keyser sold his interest in the ranch to Charles James Brenham in 1849. Keyser then operated a ferry on the Cosumnes River, where he drowned in 1850.
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 Llano Seco was filed with the Public Land Commission in 1852, and the grant was patented to Charles J. Brenham in 1860.
...
Wikipedia