19. Machine Gun McGurn

Jack “Machine Gun” McGurn (1902 – 1936) got his nickname because of his love of Thompson submachine guns. He was a Sicilian-born small-time boxer, who changed his birth name from Vincenzo Gibaldi to the Irish-sounding Jack McGurn, because boxers with Irish names got better bookings back then.
Boxing did not work out for McGurn, so he put more time and effort into his criminal sideline as mob muscle. By the mid-1920s, he had become one of Al Capone’s chief bodyguards and hitmen. He was a suspect in Capone’s most notorious payback hit, the 1929 Valentine’s Day Massacre. However, authorities were unable to charge McGurn because of a lack of evidence.



