seemingly but a puppet of the mayor of the palace, Pepin of Heristal, though his placita show him making judicial decisions of his own will, even against the Arnulfing clan.
His nickname has no comprehensible justification except possibly as a result of these judgements, but the Liber Historiae Francorum calls him a "famous man" and "the glorious lord of good memory, Childebert, the just king." He had a son named Dagobert, who succeeded him, as Dagobert III but his wife was not Edonne, the invention of later fantasists. It is possible, though not likely, that Chlothar IV was also his son. He spent almost his entire life in a royal villa on the Oise