Joe Lombardo, early consigliere of the Boston branch of La Cosa Nostra. It was Lombardo who lured Frankie Gustin, the boss of Southie’s Gustin gang, into the North End in 1931, where he and another Irish mobster were slain in an ambush that led to the Mafia becoming the most powerful organized-crime faction in the Hub. According to the book, “The Underboss,” it was Lombardo who gave Gerry Angiulo his start in the rackets after World War II, working in “Joe Lombardo’s ‘horse room’ at night, taking bets and saving his money, biding his time.” Check out the account by Gerard O’Neill and Dick Lehr of how Lombardo was slowly supplanted by Angiulo.
 

The Underboss by Gerald O’Neill and Dick Lehr