Arnulf of Carinthia
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, a bastard child of a legitimate Carolingian king.