(844) Pope Gregory departed this world and Pope Sergius followed in his place. Count Bernhard was killed by Charles. Pippin, king of Aquitaine, together with his son and the son of Bernhard, routed the army of Charles, and there fell the abbot Hugo. At the same time King Louis advanced with his army against the Wends, one of whose kings, Gestimus by name, was killed; the rest came to Louis and pledged him their fidelity, which, however, they broke as soon as he was gone. Thereafter Lothaire, Louis, and Charles came together for council in Diedenhofen, and after a conference they went their several ways in peace.