said Liutprand of Cremona, ‘always wish to have two masters, in order to keep the one in check by the other.’ After the death of the Emperor Berengar, in 924 [see Period I. pp. 463–7], Rudolf of Burgundy reigned for nearly three years. On his fall in 926, Hugh of Provence was chosen his successor, and held the name at least of king till his death in 946. There then arose two claimants to the Italian crown—Lothair, son of Hugh of Provence, and Berengar, Marquis of Ivrea, the grandson of the Emperor Berengar. Neither was strong enough to defeat the other, and both looked for help from the warlike Germans. It is however significant that they sought support, not from the distant Saxon king, but from the neighbouring dukes of Swabia and Bavaria, whose dominions extended to the crest of the Alps. Lothair begged the help of Ludolf of Swabia, while Berengar called in Henry of Bavaria. The latter gave the most efficient assistance, and Lothair in despair was negotiating for help from Constantinople when he was cut off by death (950), leaving his young and beautiful widow, Adelaide of Burgundy, to make what resistance she might to Berengar of Ivrea. But there was no chance of a woman holding her own in these stormy times, and Adelaide was soon a prisoner in the hands of the victorious marquis. She naturally looked over the Alps to her German friends and kinsfolk, and both Ludolf and Henry, already on the verge of war on account of their former differences as to Italian policies, were equally willing to come to her assistance. Henry now raised pretensions to the great city of Aquileia and the north-eastern corner of the Italian peninsula. He now aspired, as the protector of Adelaide, his former foe, to unite the Bavarian duchy with the Italian kingdom. Ludolf, more active than his uncle, appeared in the valley of the Po intent on a similar mission. Otto, ever on the watch to prevent the extension of the ducal powers, saw with dismay the prospect of his brother’s or son’s aggrandisement. He resolved by prompt personal intervention to secure the prize for himself. [Sidenote: Otto, King of Italy, 951.]