Chlothar II (or Chlotar, Clothar, Clotaire, Chlotochar, or Hlothar; 584–629), called the Great or the Young, was King of Neustria and King of the Franks. He started his reign as infant under the regency of his mother, Fredegund, assuming full power upon her death in 597. He continued her feud with Queen Brunhilda of Austrasia with equal viciousness and bloodshed.