Lewis wasn’t part of the Rat Pack.
He and Dean fell out before the Rat Pack and he never hung out with them.
(These were a lot of fun to watch...they have every year through the seventies, music, commercials, tv shows, politics, sports...each one is about a half hour long...:)
Jerry Lewis and Dean Martin fell out in about 1954 or so. Dean had had it with Jerry and his totally taking over the partnership and the act. Dean walked away from about $12 Million in deals they had in place just to get rid of Jerry.
Dean Martin was also a lot smarter than Jerry and Sinatra in investments. Dean was buying up as much Southern California Real Estate as he could at one point, then developing it. He once said the money he made in entertainment was his spending money, the real money was his other investments. When he died it was found Dean Martin had over $100 Million in Liquid Assets, this on top of everything else.
Jerry Lewis had made a lot of bad investments and I doubt his estate is that big, will be interesting to see the details.
When he left his wife Patti I guess that included his kids to.
The Rat Pack was started by Humphrey Bogart in 1955 - Lauren Bacall (his wife at the time) named it after a heck of a party and told them they looked like a rat pack.