 A settlement was reached in April 1214 to which Aimery and the citizens of Narbonne were party.In 1215 Louis the Lion, the son of the king of France, Philip Augustus, entered the territory of the duchy of Narbonne with an army.Philip had recognised Simon as Duke of Narbonne and now Louis, acting on his father's behalf, ordered the destruction of Narbonne's walls, to prevent any resistance to the royal will from being exercised later.