They called themselves “The Summit” or “The Clan.” Everyone else called them something else – The Rat Pack.
While those five were the heart of the Pack, membership was somewhat fluid. Lawford was the brother-in-law of President John Kennedy, and Sinatra thought he’d have some influence on the administration as a result. The Government was wary of his perceived mafia connections, however, and never allowed him the access he desired. As a result, Lawford was never part of the group again after 1962.
A still developing Las Vegas was their headquarters, and their popularity was a significant factor in the city’s growth. When one member had a concert, the others would often show up for an impromptu group show. The Sands Hotel even put on their sign “DEAN MARTIN – MAYBE FRANK – MAYBE SAMMY.”
The five appeared together in two films, the original Oceans Eleven (1960) and Sergeants 3 (1962). At least two of the group appeared together in six other movies.
Of course, women were a major part of the Rat Pack as well. Shirley MacLaine, Lauren Bacall, Angie Dickinson, Marilyn Monroe, and Judy Garland all had their times hanging out with the guys. They didn’t perform with the Pack, but definitely partied with them. As they might have said, “They were broads and they were barn burners, baby, but they were always the end.”