Before the election of Rudolph, Gregory had declared that he would repair to Germany. King Henry, on his part, promised to come into Italy. The Pope left Rome with an escort furnished by the countess of Tuscany, daughter of Boniface, marquis of Tuscany. The march of Gregory was a triumph. Amidst that escort he reached Vercelli. It was feared by some that Henry would make his appearance at the head of an army, but he had not that intention. The Pope, nevertheless, deemed it best to retire into the fortress of Canossa, belonging to the Countess Matilda, in order that he might be secure from all violence.
Henry had spent nearly two months at Spires in a profound and melancholy solitude. The weight of the excommunication oppressed him with a thousand griefs. Weary of that state of uncertainty, and still, as ever, tricky and hypocritical, he conceived the idea of winning over the Pope by an apparent piety, and of satisfying his requirements by a brief humiliation; moreover, the decree of excommunication declared that it should be withdrawn if the King appeared before the Pope within a year from the date of the decree. The winter was severe. After running a thousand dangers, the King and his queen arrived at Turin, and proceeded to Placentia. Thence the prince announced that he would proceed to Canossa, by way of Reggio.
The Countess Matilda met him with Hugo, Bishop of Cluny. She wished to restore harmony between the Pope and the King. Gregory seemed to desire that Henry should return to Augsburg, to be judged by the Diet. The envoys of the King at Canossa replied: "Henry does not fear being judged; he knows that the Pope will protect innocence and justice; but the anniversary of the excommunication is at hand, and if the excommunication be not removed, the King, according to the laws of the land, will lose his right to the crown. The prince humbly requests the Holy Father to raise the interdict, and to restore him to the communion of the Church. He is ready to give every satisfaction that the Pope shall require; to present himself at such place and at such time as the Pope shall order; to meet his accusers, and to commit himself entirely to the decision of the head of the Church."
Henry, says Voigt, having received permission to advance, was not long on the way. The fortress had triple inclosures; Henry was conducted into the second; his retinue remained outside the first. He had laid aside the insignia of royalty; nothing announced his rank. All day long, Henry, bareheaded, clad in penitential garb, and fasting from morning till night, awaited the sentence of the sovereign pontiff. He thus waited during a second and a third day. During the intervening time he had not ceased to negotiate. On the morrow, Matilda interceded with the Pope on behalf of Henry, and the conditions of the treaty were settled. The prince promised to give satisfaction to the complaints made against him by his subjects, and he took an oath, in which his sureties joined. When those oaths were taken, the pontiff gave the King the benediction and the apostolic peace, and celebrated Mass.
After the consecration of the host, the Pope called Henry and all present, and still holding the host in his hand, said to the King: "We have received letters from you and those of your party, in which we are accused of having usurped the Holy See by simony, and of having, both before and since our episcopacy, committed crimes which, according to the canons, excluded us from holy orders.
"Although we could justify ourselves by the testimony of those who have known our manner of life from our childhood, and who were the authors of our promotion to the episcopacy, nevertheless, to do away with all kind of scandal, we will appeal to the judgment, not of men, but of God. Let the body of our Lord Jesus Christ, that we are about to take, be this day a proof of our innocence. We pray the Almighty to dispel all suspicion, if we are innocent, and to cause us suddenly to die, if we are guilty."
Then turning towards the King, Gregory again spoke: "Dear son, do also as you have seen us do. The German princes have daily accused you to us of a great number of crimes, for which those nobles maintain that you ought to be interdicted, during your whole life, not only from royalty and all public function, but also from all ecclesiastical communion, and from all commerce of civil life. They urgently demand that you be judged, and you know how uncertain are all human judgments. Do, then, as we advise, and if you feel that you are innocent, deliver the Church from this scandal, and yourself from this embarrassment. Take this other portion of the host, that this proof of your innocence may close the lips of your enemies, and engage us to be your most ardent defender, to reconcile you with the nobles, and forever to terminate the civil war."
This address astonished the King. Going apart with his confidants, he tremblingly consulted as to what he could do to avoid so terrible a test. At length, having somewhat recovered his calmness, he said to the Pope, that as those nobles who remained faithful were, for the most part, absent, as well as those who accused him, the latter would give little faith to what he might do in his own justification, unless it were done in their presence. For that reason, he asked that the test should be postponed to the day of the sitting of the general diet, and the Pope consented.
When the Pope had finished Mass, he invited the King to dinner, treated him with much attention, and dismissed him in peace to his own people, who had remained outside the castle. Henry, on his return to his nobles, was not well received. Henry, as Voigt shows, soon became alarmed at their disapprobation, which originated only in a feeling of wounded complicity and ambitious views, which could not hope for success after the victory gained by Gregory.
Henry, hearing himself accused of weakness, thought to deliver himself from so much annoyance by a bold perjury; and he endeavored to draw Gregory and Matilda into a snare. Warned by faithful friends, they did not visit the King as had been agreed; and that new wrong determined Gregory to suspend his departure for the Diet of Augsburg. No one, not even the pious Matilda, now dared to speak of a reconciliation.