sentences:  He was the son of Pietro Greco who was killed during a bloody internal feud between the factions of the Greco Mafia clan in Ciaculli and Croceverde Giardini in 1946.His cousin Salvatore Greco "Ciaschiteddu" was the first ‘secretary’ of the Sicilian Mafia Commission.Salvatore Greco "the engineer" is one of the most enigmatic mafiosi of the Sicilian Cosa Nostra.