 Together with Bishop Huzmann of Speyer, Burchard also went to Northern Italy to induce the Lombard bishops to take similar action with regard to the pope.Burchard was successful; a synod was assembled at Piacenza and the Lombard bishops renounced obedience to Gregory.For these acts the pope excommunicated and deposed Burchard in the Lenten synod of 1076; a similar sentence was inflicted on other bishops and on Henry.