That was Frank Sinatra.Both of them had ties and connections. Martin is originally from Steubenville, Ohio. And got his start from the local mafia there. Martin was given help with his singing career by the Chicago Outfit who owned saloons in the city, and later performed in shows hosted by these bosses when he was a star. The mob bosses were Tony ("Joe Batters") Accardo and Sam Giancana.
Dean Martin did work in Vegas but he was not an alcoholic. Originally Posted by TheDaliLama
Dean Martin was an alcoholic. He had a family history of alcoholism. You can learn more about his career and lifestyle here: Online Dean Martin Biography