Donald Sinclair Davis (August 4, 1942 – June 29, 2008) was an American actor best known for playing General George Hammond in the television series Stargate SG-1 (1997–2007), He earned a Bachelor of Science degree in theater and art from Southwest Missouri State College. He was a captain at Fort Leonard Wood by the time he left the U.S. Army, "and worked with General Officers, so I've been able to use that in Hammond and other characters." He taught for several years before returning to SIUC to complete a Ph.D. degree in theatre; his dissertation was "The Evolution of Scenography in the Western Theater".
He began working in the film industry in the 1980s, while teaching at the University of British Columbia. and played the role of the Racine Belles' manager in the movie A League of Their Own.
Personal life
Davis married Ruby Fleming in 2003, by which time he had a son, Matt Davis, from a previous marriage.