Giovanna Bonanno is the Vinegar sorceress, a professional poisoner from Palermo, Sicily. She was considered a witch and at almost 80 years old was tried and executed for witchcraft after helping to murder probably hundreds of husbands (and some wives).ReferencesCursing, poisoning and feminine morality. The case of the ‘Vinegar Hag’ in lateeighteenth-century PalermoBook by GIOVANNA FIUME