The monk of St. Gall does King Didier and his people wrong.  They showed more firmness and valor than he ascribes to them; they resisted Charlemagne obstinately, and repulsed his first assaults so well that he changed the siege into an investment, and settled down before Pavia, as if making up his mind for a long operation.  His camp became a town; he sent for Queen Hildegarde and her court; and he had a chapel built where he celebrated the festival of Christmas.  But on the arrival of spring, close upon the festival of Easter, 774, wearied with the duration of the investment, he left to his lieutenants the duty of keeping it up, and, attended by a numerous and brilliant following, set off for Rome, whither the Pope was urgently pressing him to come.

On Holy Saturday, April 1, 774, Charlemagne found, at three miles from Rome, the magistrates and the banner of the city, sent forward by the Pope to meet him; at one mile all the municipal bodies and the pupils of the schools carrying palm branches and singing hymns; and at the gate of the city, the cross, which was never taken out save for exarchs and patricians.  At sight of the cross Charlemagne dismounted, entered Rome on foot, ascended the steps of the ancient basilica of St. Peter, repeating at each step a sign of respectful piety, and was received at the top by the Pope himself.  All around him and in the streets a chant was sung, “Blessed be he that cometh in the name of the Lord!” At his entry and during his sojourn at Rome, Charlemagne gave the most striking proofs of Christian faith and respect for the head of the Church.  According to the custom of pilgrims he visited all the basilicas, and in that of Sta.  Maria Maggiore he performed his solemn devotions.  Then, passing to temporal matters, he caused to be brought and read over, in his private conferences with the Pope, the deed of territorial gift made by his father Pepin to Stephen II, and with his own lips dictated the confirmation of it, adding thereto a new gift of certain territories which he was in course of wresting by conquest from the Lombards.  Pope Adrian, on his side, rendered to him, with a mixture of affection and dignity, all the honors and all the services which could at one and the same time satisfy and exalt the King and the priest, the protector and the protected.  He presented to Charlemagne a book containing a collection of the canons written by the pontiffs from the origin of the Church, and he put at the beginning of the book, which was dedicated to Charlemagne, an address in forty-five irregular verses, written with his own hand, which formed an anagram:  “Pope Adrian to his most excellent son, Charlemagne, king” (Domino excellentissimo filio Carolo Magno regi, Hadrianus papa).  At the same time he encouraged him to push his victory to the utmost and make himself king of the Lombards, advising him, however, not to incorporate his conquest with the Frankish dominions, as it would wound the pride of the conquered people