 The Carolingians differed markedly from the Merovingians in that they disallowed inheritance to illegitimate offspring, possibly in an effort to prevent infighting among heirs and assure a limit to the division of the realm.In the late ninth century, however, the lack of suitable adults among the Carolingians necessitated the rise of Arnulf of Carinthia as the king of East Francia, a bastard child of a legitimate Carolingian king, Carloman of Bavaria, himself a son of the First King of the Eastern division of the Frankish kingdom, Louis the German.It was after Charlemagne's death that the dynasty began to slowly crumble.