Moderate men of both parties, wearied with the unceasing strife, eagerly hailed the accommodation proposed by the papal legates, and rejoiced at the prospect of peace. Erlembaldo, however, was dissatisfied, and, visiting Rome, soon aroused a fresh cause of quarrel. At the suggestion of Hildebrand he started the portentous question of investitures, and on his return he endeavored to force both clergy and laity to take an oath that in future their archbishops should apply to the pope, and not to the emperor, for confirmation—thus securing a chief devoted to the cause of reform. Guido sought to anticipate this movement, and, in 1069, old and wearied with the unending contention, he resigned his archbishopric to the subdeacon Gotefrido, who had long been his principal adviser. The latter procured his confirmation from Henry IV., but the Milanese, defrauded of their electoral privileges, refused to acknowledge him. Erlembaldo was not slow to take advantage of the popular feeling; a tumult was readily excited, and Gotefrido was glad to escape at night from the rebellious city. Guido added fresh confusion by asserting that he had been deceived by Gotefrido, and by endeavoring to resume his see. To this end he made a treaty with Erlembaldo, but that crafty chieftain, obtaining possession of his person, imprisoned him in the monastery of San Celso, and then proceeded to besiege Gotefrido in Castiglione. The new archbishop defended himself bravely, until, in 1071, Erlembaldo was forced to abandon the enterprise.[521] Meanwhile another aspirant, Azzo, installed by Erlembaldo, fared no better than his rivals. The people, unbidden guests, rushed in to his inaugural banquet, unearthed him in the corner where he had hidden himself, dragged him by the heels into the street, and, placing him in a pulpit, forced him to swear that he would make no further pretensions to the see; while the papal legate, who had presided over the solemnities, was glad to escape with his life. Azzo, however, was recognized by Rome; he was released from the obligation of his oath, and money was furnished to enable him to maintain his quarrel. On the other hand, Henry IV. sent assistance to Gotefrido, which enabled him to carry on the campaign with some vigor; but he was unable to obtain a foothold in Milan. Azzo fled to Rome, and the city remained without an archbishop and under an interdict launched in 1074 by Hildebrand, who, in April, 1073, had succeeded to Alexander II.[522]