Thus the popes, sometimes in zeal for religion, at others moved by their own ambition, were continually calling in new parties and exciting new disturbances. As soon as they had made a prince powerful, they viewed him with jealousy and sought his ruin; and never allowed another to rule the country, which, from their own imbecility, they were themselves unable to govern. Princes were in fear of them; for, fighting or running away, the popes always obtained the advantage, unless it happened they were entrapped by deceit, as occurred to Boniface VIII., and some others, who under pretense of friendship, were ensnared by the emperors. Rodolph did not come into Italy, being detained by the war in which he was engaged with the king of Bohemia.
At this time Adrian died, and Nicholas III., of the Orsini family, became pontiff. He was a bold, ambitious man; and being resolved at any event to diminish the power of Charles, induced the Emperor Rodolph to complain that he had a governor in Tuscany favorable to the Guelphic faction, who after the death of Manfred had been replaced by him. Charles yielded to the emperor and withdrew his governor, and the pope sent one of his nephews, a cardinal, as governor for the emperor, who, for the honor done him, restored Romagna to the church, which had been taken from her by his predecessors, and the pope made Bertoldo Orsino duke of Romagna. As Nicholas now thought himself powerful enough to oppose Charles, he deprived him of the office of senator, and made a decree that no one of royal race should ever be a senator in Rome. It was his intention to deprive Charles of Sicily, and to this end he entered into a secret negotiation with Peter, king of Aragon, which took effect in the following papacy. He also had the design of creating two kings out of his family, the one in Lombardy, the other in Tuscany, whose power would defend the church from the Germans who might design to come into Italy, and from the French, who were in the kingdom of Naples and Sicily. But with these thoughts he died. He was the first pope who openly exhibited his own ambition;and, under pretense of making the church great, conferred honors and emolument upon his own family. Previous to his time no mention is made of the nephews or families of any pontiff, but future history is full of them; nor is there now anything left for them to attempt, except the effort to make the papacy hereditary. True it is, the princes of their creating have not long sustained their honors; for the pontiffs, being generally of very limited existence, did not get their plants properly established.
To Nicholas succeeded Martin IV., of French origin, and consequently favorable to the party of Charles, who sent him assistance against the rebellion of Romagna; and while they were encamped at Furli, Guido Bonatto, an astrologer, contrived that at an appointed moment the people should assail the forces of the king, and the plan succeeding, all the French were taken and slain. About this period was also carried into effect the plot of Pope Nicholas and Peter, king of Aragon, by which the Sicilians murdered all the French that were in that island; and Peter made himself sovereign of it, saying, that it belonged to him in the right of his wife Gostanza, daughter of Manfred. But Charles, while making warlike preparations for the recovery of Sicily, died, leaving a son, Charles II., who was made prisoner in Sicily, and to recover his liberty promised to return to his prison, if within three years he did not obtain the pope's consent that the kings of Aragon should be invested with the kingdom of Sicily.
The Emperor Rodolph, instead of coming into Italy, gave the empire the advantage of having done so, by sending an ambassador, with authority to make all those cities free which would redeem themselves with money. Many purchased their freedom, and with liberty changed their mode of living. Adolpho of Saxony succeeded to the empire; and to the papacy, Pietro del Murrone, who took the name of Celestino; but, being a hermit and full of sanctity, after six months renounced the pontificate, and Boniface VIII. was elected.