 In 622, Chlothar made Dagobert king of Austrasia, almost certainly to bind the Austrasian nobility to the ruling Franks.As a child, Dagobert lived under the care of the Carolingian dynasty forebears and Austrasian magnates, Arnulf of Metz and Pepin of Landen.Chlothar attempted to manage the unstable alliances he had with other noble families throughout much of Dagobert's reign.