Which "boss of bosses" Mafia member was behind the murder of New York City police sergeant Joseph Petrosino?
Vito Cascioferro Vito Cascioferro or Vito Cascio Ferro (January 22, 1862 – September 20, 1943), also known as Don Vito, was a prominent member of the Sicilian Mafia. He also operated for several years in the United States. He is often depicted as the "boss of bosses", although such a position does not exist in the loose structure of Cosa Nostra in Sicily.
Rosario DeSimone Rosario DeSimone (December 11, 1873 – July 15, 1946), was the head of an Italian crime family during the 1920s to 1940s that was the predecessor to the Los Angeles crime family of the American Mafia. Rosario was the father of the future California mob boss, Frank DeSimone. Not to be confused with the Chicago Italian Timothy Rosario DeSimone.