In the fourth year he corrupted, it is said, with Byzantine gold, the nobles of Rome, whose estates and castles had been ruined by the war. The gates, the bridges, and fifty hostages, were delivered into his hands; the anti-pope, Clement III, was consecrated in the Lateran; the grateful pontiff crowned his protector in the Vatican; and the Emperor Henry fixed his residence in the capitol, as the lawful successor of Augustus and Charlemagne. The ruins of the Septizonium were still defended by the nephew of Gregory; the pope himself was invested in the castle of St. Angelo; and his last hope was in the courage and fidelity of his Norman vassal. Their friendship had been interrupted by some reciprocal injuries and complaints; but, on this pressing occasion, Guiscard was urged by the obligation of his oath, by his interest, more potent than oaths, by the love of fame, and his enmity to the two emperors. Unfurling the holy banner, he resolved to fly to the relief of the prince of the apostles; the most numerous of his armies, six thousand horse, and thirty thousand foot, was instantly assembled; and his march from Salerno to Rome was animated by the public applause and the promise of the divine favour. Henry, invincible in sixty-six battles, trembled at his approach; recollected some indispensable affairs that required his presence in Lombardy; exhorted the Romans to persevere in their allegiance; and hastily retreated three days before the entrance of the Normans. In less than three years, the son of Tancred de Hauteville enjoyed the glory of delivering the pope, and of compelling the two emperors, of the East and the West, to fly before his victorious arms. But the triumph of Robert was clouded by the calamities of Rome. By the aid of the friends of Gregory, the walls had been perforated or scaled; but the imperial faction was still powerful and active; on the third day, the people rose in a furious tumult; and a hasty word of the conqueror, in his defence or revenge, was the signal of fire and pillage. The Saracens of Sicily, the subjects of Roger, and auxiliaries of his brother, embraced this fair occasion of rifling and profaning the Holy City of the Christians; many thousands of the citizens, in the sight, and by the allies, of their spiritual father, were exposed to violation, captivity, or death; and a spacious quarter of the city, from the Lateran to the Colosseum, was consumed by the flames.