Meanwhile Manfred was doing everything to meet the new attack. But there was no patriotism among the Italians of the south. Frederick II in founding his strong monarchy had alienated nobles and the cities; the clergy, of course, were his bitter foes. All seemed to think that Charles' advent would bring freedom and peace. They were soon to be disabused. On Charles' march southwards Manfred, relying solely on Germans and Saracens, met him at Benevento, but was beaten and fell in the fight (February 26, 1266). Charles entered Naples and the papal aims seemed attained. Charles was their vassal for Sicily, and was now obliged to lay down his office of senator. The German influence in Italy was destroyed; the "German" Empire was a thing of the past. But the Romans still kept the Pope at arms' length. In 1252 they had for the first time introduced a foreign senator in the Bolognese Brancaleone who, before his death in 1258, was twice overthrown and restored to power. Thus the election of Charles was no new departure. And as his successor was chosen Henry, brother of Alfonso the Wise of Castile, titular King of the Romans. He maintained the interests of the commune against the Pope, and then, from hatred to Charles, the Ghibelline cause against the papal party. The Ghibellines found a rallying ground in Tuscany, and sent to Germany for Conradin. The boy, now fourteen years of age, was welcomed by the senator in Rome; but his forces were utterly defeated by Charles at Tagliacozzo on August 23, 1268. Conradin fled, but was captured and executed.
[Sidenote: Schemes of Charles.]
This time it was Charles, and not the Pope, whose success was the obvious fact. Whether the Pope interceded for the last of the Hohenstaufens or approved his execution, is a matter of some doubt. But Charles was now elected senator of Rome for life, and Clement offered no opposition to this violation of the original agreement. Moreover, on Clement's death (November, 1268), the divisions among the Cardinals assembled at Viterbo prolonged the vacancy in the papal chair for nearly three years. During that time Charles developed the most ambitious schemes. With the Ghibelline position he took up the Ghibelline aims. Thus the papal plans for reviving the Crusades were nothing to him, but he desired to obtain for himself the crown of Jerusalem; and since Constantinople had been recovered by the Greeks in 1261, while on the one side he make a treaty with the Latin ex-Emperor, Baldwin II, whereby the reversion of the Byzantine throne should go to the King of Sicily, on the other side the papal project for an union of the Greek and Latin Churches was an obstacle to his hostile design. Charles, in fact, began to equip an expedition against Constantinople. Louis IX for the moment checked his brother's schemes and took him off on the crusade from which Louis himself was not to return. The diversion of the expedition from Palestine or Egypt to Tunis is generally attributed to the influence of the King of Sicily, whose Norman predecessors had once held the north coast of Africa: but this charge can scarcely be maintained, for the crusade thither interfered with his schemes against Constantinople, which were resumed immediately on his return to Europe.
[Sidenote: Gregory X (1272-6).]
But again Charles was destined to meet with a serious check. When at length the Church obtained a new Pope it was no servile henchman of Charles who was elected. Gregory X, a Visconti of Piacenza, had spent his life outside Italy, and was with Edward I of England in Palestine when he was chosen. He was the first Pope since Honorius III, who set before himself the promotion of a crusade as his primary object. As an indispensable prerequisite of this be desired to promote the union of the Latin and Greek Churches. It was these unselfish objects of his which enabled him to check both Charles' power and his schemes. There was a still further point. The fall of the Hohenstaufen had destroyed the imperial house, and had left the Papacy not only isolated but face to face with one who was proving himself "a burdensome protector." The equilibrium of Europe had been seriously shaken. The election of two rival Kings of the Romans had not helped to restore it. But now Richard of Cornwall, who had tried to assert his position, was dead, and Gregory refused to recognise the claims of Alfonso of Castile. But Louis IX was dead also, and Charles would be likely to influence his nephew the new King of France more than he had ever influenced his high-souled brother. It was necessary to find a new King of the Romans who might be a counterpoise in Europe, and perhaps even in Italy, to Charles. Thus encouraged and almost coerced by the Pope, the German princes elected Rudolf Count of Hapsburg (September 1273), a man of "popular qualities" who was not too powerful.
[Sidenote: Second Council of Lyons.]
The success of the papal policy was to be advertised to Europe in a second Council of Lyons (May-July, 1274). This was attended by five hundred bishops and innumerable other clergy. An opportunity was taken to issue a canon, the object of which was to prevent the recurrence of the long vacancy in the papal see which had preceded Gregory's election. It was decreed that ten days after the death of the Pope the Cardinals should meet and should be confined in one conclave until a choice had been made. All intercourse with the outside world was forbidden; the food was to be supplied through a window, the amount of it being diminished after three days; while a further diminution was to take place five days later. The duty of supervision was entrusted to the magistrates of the city in which the election might be held. Despite the stringent resistance of the Cardinals the canon was passed with the aid of the bishops; and although it was more than once suspended, it has continued to direct the procedure at papal elections to the present day.
[Sidenote: Union of Eastern and Western Churches.]
But the real object of the meeting of the Council was that it should witness the reconciliation of the Eastern Church with the Western. More than two centuries earlier (1054) the long jealousy of Rome and Constantinople had ended in the rupture of communion between the Christians of West and East; and the Crusades and the Latin Empire of Constantinople had prevented any real attempt at re-union. But just now circumstances were favourable. Michael Palæologus, who had reconquered Constantinople for the Greeks and made himself Emperor, was in difficulties at home with a section of the clergy, and, threatened by the designs of Charles of Sicily, he coerced the Greek clergy into accepting the union with the Western Church, which gave the only chance of such help as would hold Charles in check. An embassy of Greeks appeared at Lyons; and although Bonaventura and Thomas Aquinas were present to argue the case for the Western Church, no persuasion was needed. The Greeks expressed a readiness to accept the primacy of Rome, the doctrine that the Holy Ghost proceeded from both Father and Son (whereas they had maintained His procession from the Father alone), and all the customs of the Western Church. It seemed as if at length a crusade were really possible. The chief sovereigns of Europe had taken the cross, and Gregory had even persuaded Charles of Sicily and the Greek Emperor to sign a truce.
[Sidenote: Nicholas III (1277-80).]