Don's family is a reference to the MAFIA, also known as La Cosa Nostra. The MAFIA is an organized crime syndicate that originated in Sicily and has since spread throughout the world. It is known for its involvement in activities such as extortion, racketeering, and money laundering. Don's family is a term used to refer to the members of the MAFIA, who are often referred to as 'made men' or 'wise guys'. La Cosa Nostra is the Italian name for the MAFIA, which translates to 'our thing' or 'this thing of ours'.