Therefore, in 957, Otto sent Ludolph with a large force against Berengar. The Crown Prince died in the midst of victory. Then Otto had his little son crowned as Otto II. in 961 and crossed the Alps with a big army. All resistance vanished before this new Charles the Great. In a general diet of the Lombard kingdom Berengar was deposed and at Pavia the German monarch was formally crowned "King of Italy." Early in 962 he triumphantly entered the Eternal City. The Pope gave him hearty greeting, held services of thanksgiving, and gave a great feast in his honour. On the following Sunday the imperial coronation occurred in the church of St. John Lateran.[395:1] The King promised to protect and defend the Church[395:2]; the Pope to be an obedient subject of the Emperor; and the people to choose no future Pope without Otto's consent. Otto was then anointed by the Pope, the imperial crown was put on his brow, the imperial robe was adjusted, and the imperial sword was buckled on while the populace shouted "Long live Otto, Emperor Augustus." The head of that race which Charles the Great had converted by the sword had revived the Empire, the policy, and the traditions of that renowned ruler. The papal policy of Emperor Otto I. was soon revealed. He granted to the Church the most famous and the most important "constitution" since that of Lothair (824) in which all the grants of Pepin, Charles the Great, and Louis the Pious were confirmed and the rights of the Emperor in papal elections clearly defined.[395:3] Otto had no sooner reached northern Italy to subdue the irrepressible Berengar and his sons, however, than Pope John renounced his allegiance to his new master, conspired with Berengar, and even incited the heathen Magyars to invade Germany.[395:4] The Emperor refused to believe these plots until confirmed by his own messengers and even then excused the young Pontiff by remarking: "He is only a boy; the example of good men will reform him."[395:5] He then hastened to Rome to begin that work.