All Germany was in a blaze in consequence of the quarrel between the Church and the Empire. After having deposed the emperor at the council of Lyons, Innocent IV. offered the imperial crown to any one who would take up arms against the excommunicated prince, and bring about the triumph of the Holy See. Henry, landgrave of Thuringia, allowed himself to be seduced by the promises of the sovereign pontiff, and was crowned emperor by the archbishops of Mayence and Cologne, and a few other ecclesiastical electors. From that event civil war broke out in all parts; Germany was filled with missionaries from the pope, with the power of the evangelical word against Frederick, whom they styled the most redoubtable of infidels. The treasures collected for the equipments of the holy war were employed in corrupting fidelity, laying plots, fomenting treasons, and keeping up troubles and discords; so that it may well be supposed the cause of Christ and the deliverance of Jerusalem were entirely forgotten.
Italy was not less agitated than Germany; the thunders of Rome, so often hurled at Frederick, had redoubled the fury of the Guelphs and the Ghibellines. All the republics of Lombardy were leagued in opposition to the party of the emperor; the threats and the manifestoes of the pope would not allow a single city to remain neuter, or leave peace an asylum in the countries situated between the Alps and Sicily. The missionaries of Innocent employed, by turns, the arms of religion and of policy; after having declared the emperor to be a heretic and an enemy to the Church, they represented him as a bad prince and a tyrant, and dazzled the eyes of the people with the charms of liberty, always so powerful a motive upon the minds of nations. The sovereign pontiff sent two legates into the kingdom of Sicily, with letters for the clergy, the nobility, and the people of the cities and country. “We have not been able to see without some surprise,” wrote Innocent, “that, burdened as you are, living under the opprobrium of servitude, and oppressed in your persons and your property, you have hitherto neglected the means of securing yourselves the sweets of liberty. Many other nations have presented you with an example; but the Holy See, far from accusing you, is satisfied with pitying you, and finds your excuse in the fear that must hold possession of your hearts under the yoke of a new Nero.” On terminating his letter to the Sicilians, the pope endeavoured to make them understand that God had not placed them in a fertile region and beneath a smiling sky to wear disgraceful chains; and that by shaking off the yoke of the emperor of Germany, they would only second the views of Providence.
Frederick, who had at first defied the thunders of Rome, was terrified at the new war declared against him by the pope. The interdict placed upon his states, the terrible array of the maledictions of the Church, strongly affected the minds of the multitude, and might at length shake the fidelity of his subjects; he himself felt his courage forsake him; his party in Italy grew weaker every day; his armies had experienced some checks in Germany; many conspiracies had been formed against his life, and amongst the conspirators, he had the grief to find some of his servants whom he had loaded with kindnesses. This haughty monarch became convinced that he had no course but to seek a reconciliation with the Church, and addressed himself to Louis IX., whose wisdom and piety rendered him the arbiter of sovereigns and nations. Frederick, in his letters, promised to abide by the decision of the king of France and his barons, and engaged, beforehand, to go in person to the conquest of the Holy Land, or to send his son, the king of the Romans. In order to interest Louis in his cause, the emperor offered to supply him with provisions, vessels, and everything he should stand in need of in the expedition to the East.
Louis eagerly embraced this opportunity for reëstablishing peace in Europe and assuring the success of the holy war. Several ambassadors were sent to the pope at Lyons, conjuring the father of the faithful to listen to the voice of mercy rather than to that of anger. The king of France had two long conferences with Innocent in the monastery of Cluni, and supplicated him afresh to appease by his clemency the troubles of the Christian world; but enmity had been carried too far to leave any hopes of peace; it was not possible for Innocent and Frederick to pardon each other sincerely the outrages they had mutually committed. The emperor had spared neither threats nor violences against the popes; he did not hate them more for the injuries he had received from them than for those he had done them. On the other side, it had for a length of time been determined, in the councils of Rome, to effect the overthrow of the house of Swabia, which was suspected, and with reason, of entertaining the project of invading Italy and establishing the seat of imperial domination in the city of St. Peter. This policy, embraced with ardour, had assumed all the character of a personal vengeance in the mind of Innocent. The triumph, even, of the pontiff, whilst flattering his pride and ambition, appeared to double his hatred, and the hope of completing the ruin of his enemy rendered him implacable.
In vain the emperor of Germany, overcome by fear rather than won by the love of peace, promised to descend from his throne, and pass the remainder of his days in Palestine, on condition that he should receive the benediction of the pope, and that his son Conrad should be raised to the empire. This entire abnegation of power, this strange abasement of royal majesty, produced no effect upon Innocent, who did not believe, or feigned not to believe, the promises of Frederick; in vain Louis IX., whose mind was incapable of suspecting imposture, represented to the pope the advantages that Europe, Christendom, and the court of Rome itself might derive from the repentance and offers of the emperor; in vain he spoke to him of the vows and the safety of pilgrims, of the glory and peace of the Church; the discourses of the holy king were scarcely listened to, and his pious mind could not view, without being moved with disgust, this inflexible rigour in the father of the Christian world.
Whilst the report of these discords, upon gaining the East, spread joy among the infidels, the unhappy inhabitants of Palestine gave themselves up to despair on learning that so many untoward events retarded the preparations for the crusade. Several messages from the Christians beyond the seas were sent to the sovereign pontiff to intercede for a prince from whom they hoped for such powerful assistance. The patriarch of Armenia wrote to the court of Rome to demand favour for Frederick; he demanded it in the name of the threatened Christian colonies; in the name of the city of God, fallen into ruins; in the name of the sepulchre of Christ, profaned by barbarians. The pope made no reply whatever to the patriarch of the Armenians, and appeared to have forgotten Jerusalem, the holy sepulchre, and the Christians of Syria; he had, indeed, but one thought,—that of carrying on the war against Frederick. Innocent pursued his redoubtable enemy even to the East, and endeavoured to induce the sultan of Cairo to break his engagements with the emperor of Germany. The sultan of Cairo received, with as great joy as surprise, a message which informed him so authentically of the divisions that existed among the Christian princes; he answered the pope with a severity full of contempt; and the more he was pressed to be unfaithful to the treaties made with Frederick, the more he affected to display a fidelity from which he hoped to obtain an advantage over the Christian Church.
It was at this period that the emperor of Germany, urged on to despair, in some sort justified the most violent proceedings of the court of Rome by his conduct. He could not pardon Louis IX. for having remained neuter in a quarrel that interested all Christendom, and if the Arabian historian Yafey may be believed, he sent an ambassador secretly into Asia to warn the Mussulman powers of the expedition projected by the king of France. Throwing off at once the tone of submission to the pope, he resolved to repel force by force, and violence by violence. Some successes which he obtained in Germany, raised his courage, and completely dissipated all his scruples. He laid siege to the city of Parma, at the head of a formidable army. Horrible cruelties signalized his first triumphs; the bishop of Arezzo, who fell into his hands, with many other prisoners of war, were loaded with irons, and handed over to the executioner without even the ceremony of a trial.
In the intoxication of success, Frederick threatened to cross the Alps, and attack Innocent within the walls of Lyons. Heaven, however, would not permit the execution of a project formed by hatred and revenge. The Guelphs beat and dispersed the imperial army. Fortune changed, and the irresolute character of Frederick changed as suddenly with it. Victory had inflamed his pride and redoubled his fury; a single defeat cast him into despondency, and rendered him again accessible to fear. From that time he resumed the part of a suppliant to the pope; from that time protestations and prayers seemed to cost his terrified mind no effort.
As the extent of his empire gave umbrage to the court of Rome, Frederick promised to divide his dominions, and give Sicily to his son Henry, and Germany to his son Conrad. He submitted his religious belief to the examination of several bishops, and sent their decision to the pope. He went at last even so far as to promise to come in person to solicit the clemency of Innocent. The sovereign pontiff had just caused the count of Holland to be nominated emperor, in the place of the landgrave of Thuringia, who had died on the field of battle. In this state of things he dreaded less the hostilities and angry threats of Frederick, than he did his protestations of submission and repentance. The supplications of princes and nations, who demanded favour for a power he wished to destroy, annoyed Innocent; they seemed to accuse him, in the eyes of Christendom, of obstinacy in his refusal, and without inducing him to renounce his policy, only embarrassed him in the execution of his designs.