Pepin of Landen
As bishop, Cunibert served as an advisor to King Dagobert I. In 633 or 634 Dagobert's son and heir Sigebert III was invested as king of Austrasia. Following this, Dagobert made Cunibert and Adalgisel, the mayor of the palace, co-regents of the kingdom. Following the death of Adalgisel's successor, Pepin of Landen, Cunibert served as the chief public official of the king, in which capacity he revised the Lex Ribuaria.