I don't know, never heard of any rapist bosses in Italy. However, they had a strange view on rape - there were cases in which if a rapist married the victim the matter was considered settled (what a sick logic). In the 60s there was a case when Filippo Melodia, a relative of the Alcamo boss Vincenzo Rimi, committed a rape and the victim refused to marry him, her reaction was considered to be the first case regarding mafia families in which the victim has found the courage to oppose herself to the idea of settling the matter by marrying the rapist (at least the sources I read state so).