Knightsen is a census-designated place (CDP) in Contra Costa County, California, in the United States. As of the 2010 census, the CDP population was 1,568, up from 861 reported in the 2000 census.
Don José Noriega, a wealthy Californio ranchero, was granted Rancho Los Méganos in 1835, covering all of modern Knightsen.
A Santa Fe Railroad charter train at Knightsen in 1968
Rancho Los Méganos was a 13,316-acre (53.89 km2) Mexican land grant in the southwestern Sacramento-San Joaquin Delta region of present-day Contra Costa County, California.
Don José Noriega was granted Rancho Los Méganos in 1835.
John Marsh in 1852
John Marsh stone house on Rancho Los Méganos. The home still exists, and has been stabilized, but awaits restoration (pending fundraising). See External Links below.