Born in Wisconsin on April 28, 1867. Thwing moved to California in 1906. He was active in San Francisco during the 1920s and 1930s. He died at his home in San Rafael, CA on Dec. 12, 1944.
Source: Edan Hughes, author of the book "Artists in California, 1786-1940"
California Arts & Architecture list, 1932; Death Record.Nearly 20,000 biographies can be found in Artists in California 1786-1940 by Edan Hughes and is available for sale ($150). For a full book description and order information please click here