 The two brothers then campaigned united against their cousin Chlothar II of Neustria, but their alliance lasted only until 599, when they took up arms against each other.In 593, although only as a symbolic presence since he was only nine years old, Clothar II appeared at the head of his army, which routed the Austrasian Duke Wintrio who was invading Neustria.In 596, Clotaire and Fredegund took Paris, which was supposed to be held in common.