Bernardo Provenzano (born January 31, 1933 in Corleone, Sicily) is a member of the Sicilian Mafia (Cosa Nostra) and is suspected of having been the head of the Corleonesi, a Mafia faction that originated in the village of Corleone, and de facto capo di tutti capi (boss of bosses) of the entire Sicilian Mafia until his arrest in 2006.
His nickname is Binnu u tratturi (Sicilian for "Binnie the tractor") because, in the words of one informant, "he mows people down." Another nickname is The Accountant due to his apparently subtle and low-key approach to running his crime empire, at least in contrast to some of his more violent predecessors.
Read more about Bernardo Provenzano: Early Years, Elevation To Godfather, Evasion and Capture, Provenzano's New Mafia, Division Within Cosa Nostra, Succession, Operation Gotha