Ok I found info

Around 1997, Guarente and Gentile went to work for Robert (Boston Bobby) Luisi, Jr., a recently-named capo in the Philadelphia mafia operating in New England. Mainly, they acted as bodyguards and cocaine distributors on his behalf. Boston Bobby lost his father and brother to a November 1995 mob slaying in a Charlestown restaurant, two of the final victims of the long-ranging conflict that engulfed the Patriarca syndicate throughout the late-1980s and into the early-to-mid 1990s.

Luisi, Jr. met some members of the Philly mob in prison and defected for the offer of being made into La Cosa Nostra, something he failed to do while serving under the Patriarca regime. Initiated into the mafia by Philadelphia LCN boss Joseph (Skinny Joey) Merlino, Boston Bobby was immediately promoted to captain status and allowed to put a crew together to run in Massachusetts. The “Three Bobbys,” Bobby Luisi, Jr., Bobby Guarente and Bobby Gentile were all inducted into the mafia in the same ceremony.