John Marsh

John Marsh (June 5, 1799 in South Danvers, Massachusetts – September 24, 1856 in Pacheco, California). He was an early pioneer and settler in Alta California, the first Harvard graduate and the first to practice medicine there. He knew Hebrew, Latin and Greek, and was the first to compile a dictionary of the Sioux language. He became one of the wealthiest ranchers in California, and was one of the most influential men in the establishment of California statehood.