7. Einhard's Life of Karl the Great. Einhard, Vita Karoli Magni; M. G. SS. folio, II, pp. 443 ff. Einhard, who lived about 770 to 840, was a scholar, and a member of the court and the circle of Karl the Great. His biography of Karl is the most reliable and intimate account of the life and the character of the emperor that we possess. 3. After ruling as king of the Franks for fifteen years, Pippin died at Paris, leaving two sons to succeed him, Karl and Karlmann.... Karlmann, however, died after two years of joint rule, and Karl became king of all the Franks. 5. The first of his wars was that against the duke of Aquitaine,{42} which was begun but not completed by his father. Karl had asked his brother to aid him in this undertaking, but Karlmann had failed to send the help which he had promised. Karl, however, undertook the war alone and carried it through successfully. Hunold, who had tried to recover the duchy of Aquitaine after the death of Waifer, was driven out of the province and forced to take refuge in Gascony. But Karl advanced across the Garonne, threatening Lupus, the duke of Gascony, with war unless he should surrender the fugitive. Thereupon Lupus not only gave up Hunold, but acknowledged the authority of Karl over his own duchy as well. 6. After the pacification of Aquitaine and the death of his brother, Karl made war on the Lombards in response to the prayer of Adrian, bishop of Rome. His father Pippin had also attacked the Lombards in the time of king Aistulf, at the request of pope Stephen, ... but had been content with besieging Aistulf in Ticino and securing pledges that he would restore the places which he had taken and would never renew his attack upon Rome. Karl went further: he overthrew Desiderius, king of the Lombards, and drove his son Adalgisus out of Italy; restored to the Romans their possessions; defeated a new rising under Radegaisus, duke of Friuli; and subjugated all of Italy, making his son Pippin king.{43}