Meanwhile the nobles had taken heart and offered armed resistance to the Patarian faction, resulting in incessant fights and increasing bloodshed. Nicholas II., who by this time had succeeded Stephen IX., sent Hildebrand and Anselmo di Badagio on a mission to Milan, with instructions to allay the passions which led to such deplorable results, and, while endeavoring to uphold the rules of discipline, to pacify if possible the people, and to arrange such a basis of reconciliation as might restore peace to the distracted church. The milder Anselmo might perhaps have succeeded in this errand of charity, but the unbending Hildebrand was not likely to listen to aught but unconditional subjection to the canons and to Rome. The quarrel therefore waxed fiercer and deadlier; the turmoil became more inextricable as daily combats embittered both parties, and the missionaries departed, leaving Guido with scarcely a shadow of authority over his rebellious city, and the seeds of discord more widely scattered and more deeply planted than ever.[509] Again, in 1059, a papal legation was sent with full authority to force the recalcitrant clergy to submission. Anselmo again returned to his native city, accompanied this time by Peter Damiani. Their presence and their pretensions caused a fearful tumult, in which Damiani and Landolfo were in deadly peril.[510] An assembly was at length held, where the legates asserted the papal preëminence by taking the place of honor, to the general indignation of the Milanese, who did not relish the degradation of their archbishop before the representatives of a foreign prelate. The question in debate hinged upon the authority of Rome, which was stoutly denied by the Lombards.[511] Peter, in a long oration, showed that Rome had christianized the rest of Western Europe, and that St. Ambrose himself had invoked the papal power as superior to his own. The pride of the Ambrosian church gave way, and the supremacy of St. Peter was finally acknowledged. This granted, the rest followed as a matter of course, and the heretical errors of simony and marriage had to be abandoned. Peter thought himself merciful in his triumph; where all alike were guilty, punishment for the past became impossible, and he restricted himself to provisions for the future. The archbishop and his clergy signed a paper expressing their contrition in the most humiliating terms, and binding themselves and their successors, under penalty of eternal damnation, to render simony thereafter unknown. As regards the Nicolitan heresy, a significant caution was observed, for its extirpation was only promised in as far as it should be found possible;[512] and when Arnolfo, the nephew of Guido, swore for his uncle that in future monks should be the only persons ordained without a preliminary oath that no money had been paid or received, it is observable that the maintenance of chastity was discreetly passed over. Then the archbishop and his clergy swore, in the hands