At this time the states of Italy were governed in the following manner: the Romans no longer elected consuls, but instead of them, and with the same powers, they appointed one senator, and sometimes more.
The league which the cities of Lombardy had formed against Frederick Barbarossa still continued, and comprehended Milan, Brescia, Mantua, and the greater number of the cities of Romagna, together with Verona, Vicenza, Padua, and Trevisa. Those which took part with the emperor, were Cremona, Bergamo, Parma, Reggio, and Trento. The other cities and fortresses of Lombardy, Romagna, and the march of Trevisa, favored, according to their necessities, sometimes one party, sometimes the other.
In the time of Otho III. there had come into Italy a man called Ezelin, who, remaining in the country, had a son, and he too had a son named Ezelin. This person, being rich and powerful, took part with Frederick, who, as we have said, was at enmity with the pope;Frederick, at the instigation and with the assistance of Ezelin, took Verona and Mantua, destroyed Vicenza, occupied Padua, routed the army of the united cities, and then directed his course towards Tuscany.
Ezelin, in the meantime, had subdued the whole of the Trevisian March, but could not prevail against Ferrara, which was defended by Azone da Este and the forces which the pope had in Lombardy; and, as the enemy were compelled to withdraw, the pope gave Ferrara in fee to this Azone, from whom are descended those who now govern that city.
Frederick halted at Pisa, desirous of making himself lord of Tuscany;but, while endeavoring to discover what friends and foes he had in that province, he scattered so many seeds of discord as occasioned the ruin of Italy; for the factions of the Guelphs and Ghibellines multiplied,--those who supported the church taking the name of Guelphs, while the followers of the emperor were called Ghibellines, these names being first heard at Pistoia. Frederick, marching from Pisa, assailed and wasted the territories of the church in a variety of ways; so that the pope, having no other remedy, unfurled against him the banner of the cross, as his predecessor had done against the Saracens. Frederick, that he might be suddenly abandoned by his people, as Frederick Barbarossa and others had been, took into his pay a number of Saracens; and to bind them to him, and establish in Italy a firm bulwark against the church, without fear of papal maledictions, he gave them Nocera in the kingdom of Naples, that, having a refuge of their own, they might be placed in greater security. The pontificate was now occupied by Innocent IV., who, being in fear of Frederick, went to Genoa, and thence to France, where he appointed a council to be held at Lyons, where it was the intention of Frederick to attend, but he was prevented by the rebellion of Parma: and, being repulsed, he went into Tuscany, and from thence to Sicily, where he died, leaving his son Conrad in Suabia; and in Puglia, Manfred, whom he had created duke of Benevento, born of a concubine. Conrad came to take possession of the kingdom, and having arrived at Naples, died, leaving an infant son named Corradino, who was then in Germany. On this account Manfred occupied the state, first as guardian of Corradino, but afterward, causing a report to be circulated that Corradino had died, made himself king, contrary to the wishes of both the pope and the Neapolitans, who, however, were obliged to submit.
While these things were occurring in the kingdom of Naples, many movements took place in Lombardy between the Guelphs and the Ghibellines. The Guelphs were headed by a legate of the pope; and the Ghibelline party by Ezelin, who possessed nearly the whole of Lombardy beyond the Po; and, as in the course of the war Padua rebelled, he put to death twelve thousand of its citizens. But before its close he himself was slain, in the eightieth year of his age, and all the places he had held became free. Manfred, king of Naples, continued those enmities against the church which had been begun by his ancestors, and kept the pope, Urban IV., in continual alarm; so that, in order to subdue him, Urban summoned the crusaders, and went to Perugia to await their arrival. Seeing them few and slow in their approach, he found that more able assistance was necessary to conquer Manfred. He therefore sought the favor of France; created Louis of Anjou, the king's brother, sovereign of Naples and Sicily, and excited him to come into Italy to take possession of that kingdom. But before Charles came to Rome the pope died, and was succeeded by Clement IV., in whose time he arrived at Ostia, with thirty galleys, and ordered that the rest of his forces should come by land. During his abode at Rome, the citizens, in order to attach him to them, made him their senator, and the pope invested him with the kingdom, on condition that he should pay annually to the church the sum of fifty thousand ducats;and it was decreed that, from thenceforth, neither Charles nor any other person, who might be king of Naples, should be emperor also.
Charles marched against Manfred, routed his army, and slew him near Benevento, and then became sovereign of Sicily and Naples. Corradino, to whom, by his father's will, the state belonged, having collected a great force in Germany, marched into Italy against Charles, with whom he came to an engagement at Tagliacozzo, was taken prisoner while endeavoring to escape, and being unknown, put to death.
Italy remained in repose until the pontificate of Adrian V. Charles, being at Rome and governing the city by virtue of his office of senator, the pope, unable to endure his power, withdrew to Viterbo, and solicited the Emperor Rodolph to come into Italy and assist him.