If proof were lacking of de Montfort's pre-eminent capacity it would be furnished by the rapid undoing of all that he had accomplished, in the hands of his son and successor Amauri. Even during the siege his prestige was yet such that, December 18, 1217, the powerful Jourdain de l'Isle-Jourdain made submission to him as Duke of Narbonne and Count of Toulouse and furnished as securities Géraud, Count of Armagnac and Fézenzac, Roger, Viscount of Fézenzaquet, and other nobles; and in February, 1218, the citizens of Narbonne abandoned their rebellious attitude. His death was regarded as the signal of liberation, and wherever the French garrisons were not too strong, the people arose, massacred the invaders, and gave themselves back to their ancient lords. Vainly did Honorius recognize Amauri as the successor to his father's lordships, put the two Raymonds to the ban, and grant Philip Augustus a twentieth of ecclesiastical revenues as an incentive to another crusade, while plenary indulgence was offered to all who would serve. Vainly did Louis Cœur-de-Lion, with his father's sanction, and accompanied by the Cardinal-Legate Bertrand, lead a gallant army of pilgrims which numbered in its ranks no less than thirty-three counts and twenty bishops. They penetrated, indeed, to Toulouse, but the third siege of the unyielding city was no more successful than its predecessors, and Louis was obliged to withdraw ingloriously, having accomplished nothing but the massacre of Marmande, where five thousand souls were put to the sword, without distinction of age or sex. Indeed, the pitiless cruelty and brutal licentiousness habitual among the Crusaders, who spared no man in their wrath, and no woman in their lust, aided no little in inflaming the resistance to foreign domination. One by one the strongholds still held by the French were wrested from their grasp, and but very few of the invaders founded families who kept their place among the gentry of the land. In 1220 a new legate, Conrad, tried the experiment of founding a military order under the name of the Knights of the Faith of Jesus Christ, but it proved useless. Equally vain was the papal sentence of excommunication and exheredation fulminated in 1221; and when, in the same year, Louis undertook a new crusade and received from Honorius a twentieth of the Church revenues to defray the expenses, he turned the army thus raised against the English possessions and captured La Rochelle, in spite of the protests of king and pope.[162]