It is not easy to account for the harsh proceedings of the next year (788) after this apparent reconciliation of the vassal to his lord. Possibly something had come to light which justified Charles in the belief that Tassilo would never honestly accept the position of vassal from which he had so often endeavored to escape. An assembly was convened at Ingelheim, probably in the month of June. Tassilo, now helpless and unarmed, was summoned to appear before it, and was there accused, on the evidence of some of his own subjects who were loyal to Charles, of having opened negotiations with the barbarous Avars on the east after his last submission to the Frankish king. Liutberga, his Lombard queen, mindful of the old feud and of her father’s wrongs, was said to have been the ceaseless preacher of revenge. Even against the life of Charles, Tassilo was accused of having conspired, and when men spoke to him of the danger in which he thus placed his hostage-son, he is said to have answered: “Had I ten sons I would lose them all in this cause, since it were better for me to die than to live a vassal on such ignominious terms as I have sworn to.” Then the old accusation of the _harisliz_ of 763 was brought up against him, and on this and other charges he was found guilty by the assembled nobles, Franks, and Bavarians, Lombards and Saxons, assembled from all parts of Charles’s realm, and by their united voice was adjudged worthy of death. This sentence, however, was commuted by “the most pious Charles, moved by compassion and the love of God and because he was his kinsman: and he obtained from his own servants and the servants of God [the nobles secular and religious] this favor, that he should not die. Then Tassilo, being asked by the most clement king what he wished, begged that he might have leave to assume the tonsure and enter a monastery, there to do penance for so many sins, that he might save his soul. Similarly his son Theodo was sentenced, tonsured, and sent into a monastery, and the few Bavarians who chose to remain in opposition to King Charles were banished.”