The original Rat Pack of Holmby Hills included Bogey & Bacall, Judy Garland & Sid Luft, David Niven, Jimmy Van Husuen, and Frank Sinatra. After Bogey's death the group drifted apart and Sinatra started his own group called "The Clan" which included Martin, Davis, Bishop, and Lawford. They also occasionally included Angie Dickinson and Shirley MacLaine. "The Clan" turned out to be an inappropriate name in the '60s, so the group went back to the earlier name of Bogey's group but left off the Holmby Hills and just called themselves The Rat Pack. http://www.deanmartinfancenter.com/index/rightframe/15ratpack/15ratpack.html