 He had chosen to support the schism of Archbishop Wibert of Ravenna, instigated by the Emperor Henry IV, and some German and north Italian bishops.On 8 April 1098, he was arraigned before the Council of Milan, presided over by Archbishop Anselm with the participation of bishops and archbishops from both southern France and Lombardy.It confirmed the sentence of anathema which had been leveled by Pope Urban II against Wibert (Guibertus), Obertus of Brescia, Arnulfus of Bergamo, Gregory of Vercelli, and Anselm of Novara.