 Pope Victor III held a synod at Benevento in August 1087, at which he excommunicated the antipope Wibert, excommunicated Archbishop Hugh of Lyon and Richard of Marseille, and ordered the deposition of any bishop or abbot who accepted lay investiture.Pope Urban II held a general synod at Benevento from 28–31 August 1091.At the synod the Pope excommunicated the Emperor Henry IV and his antipope Wibert of Ravenna (called Clement III).