To Otho, Gregory, in 1074, sent the canons of the synod inhibiting marriage and simony, with orders to use every exertion to secure the compliance of his clergy. Otho apparently did not manifest much eagerness to undertake the unpopular task, and Gregory lost little time in calling him to account. Before the year expired, we find the pope addressing a second epistle to the bishop, angrily accusing him of disobedience in permitting the ministration of married priests, and summoning him to answer for his contumacy at a synod to be held in Rome during the approaching Lent. Nor was this all, for at the same time he wrote to the clergy and people of the diocese, informing them of the disobedience of their bishop and of his summons to trial, commanding them, in case of his persistent rebellion, to no longer obey or reverence him as bishop, and formally releasing them from all subjection to him. Otho doubtless considered it imprudent to show himself at the synod of 1075; consequently in that of 1076 he was excommunicated and deprived of his episcopal functions. During the autumn of the same year, however, the legate Altmann of Passau restored him to communion at Ulm, but without granting him the privilege of officiating. Otho disregarded this restriction, and not only persisted in exercising his functions, but openly favored and protected the married clergy. For this Gregory absolved his flock from all obedience to him, whereupon Otho abandoned the Catholic party and formally joined the imperialists, who were then engaged in the effort to depose Gregory. From some motives of policy, the pope granted the hardened sinner three years for repentance, at the expiration of which, in 1080, he sent Altmann to Constance to superintend the election of another bishop. The new incumbent, however, proved incapable through bodily infirmity; and, in 1084, Otto of Ostia was sent to Constance, and under his auspices Gebhardt was elected bishop, and duly consecrated in 1085.[541] Evidently Gregory was not a man to abandon his purpose, and those who opposed him could not count upon perpetual immunity.