Pentito
In September 1992 he became a pentito and started to collaborate with the authorities. He claimed he was disillusioned by Riina's tactics of murder and treachery, complaining he had been used then discarded by Riina. Marchese admitted to have participated in more than 20 murders, including the one on Stefano Bontade and Salvatore Inzerillo. He was the first mafioso from the winning faction of the Corleonesi in the Second Mafia War to become state witness.
Giuseppe Marchese was an in-law of Leoluca Bagarella from Corleone, who married Pino’s sister Vincenza in 1991. She later committed suicide after Giuseppe Marchese began collaborating with authorities. Another version was that she was clinically depressed, after a series of miscarriages. She allegedly also was shocked by the killing of the 13-year old Giuseppe Di Matteo in January 1996 in retaliation for the “betrayal” of his father Santo Di Matteo who had turned state witness after his arrest on June 4, 1993. The body of the little Giuseppe was dissolved in acid. Vincenza Marchese’s body has never been found.
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