Giuseppe Genco Russo (26 January 1893 – 18 March 1976) was an Italian mafioso, the boss of Mussomeli in the Province of Caltanissetta, Sicily. Genco Russo, also known as "Zi Peppi Jencu", was an uncouth, sly, semi-literate thug with excellent political connections. A vulgar man – he used to spit on the floor no matter who was present – he was often photographed with bishops, bankers, civil servants and politicians. As such he was considered to be the arbiter of Mafia politics, and was regarded as the successor of Calogero Vizzini, who had died in 1954.