Clovis II (637 – 27 November 657 or 658) succeeded his father Dagobert I in 639 as King of Neustria and Burgundy. His brother Sigebert III had been King of Austrasia since 634. He was initially under the regency of his mother Nanthild until her death in her early thirties in 642. This death allowed him to fall under the influence of the secular magnates, who reduced the royal power in their own favour.