of a mediator, Peter of Capua, a cardinal [Sidenote: _Jan._] whom the new Pope Innocent III had recently sent to France as legate. By the advice of Peter and of some magnates on both sides, the truce was prolonged for a term of five years; it was confirmed by oath, and both kings dismissed their troops, bidding them return to their homes.[1261] The biographer of Philip Augustus says that “through the trickery of the king of England” the agreement was not confirmed by an exchange of hostages.[1262] It may have been on this plea that four French counts through whose territories Mercadier and his men had to pass on their way southward ventured to ignore the truce and set upon the Routiers, many of whom they slew. Philip swore that this outrage had no sanction from him. Presently afterwards, however, when Richard, thinking Normandy was safe for a while, was on his way to visit his southern dominions, Philip not only resumed the fortification of Gouletot, but also destroyed the neighbouring forest. At these tidings Richard hurried back to Normandy, and sent his chancellor to the French court to declare the truce dissolved unless Philip would pull down the new fortress. Philip, urged by the legate, promised to do so. Then Richard declared he would have either a full settlement of all their disputes or no peace at all. A form of peace was drawn up; its provisions were that the king of France should restore to the king of England all the lands which he had taken from him either in war or by any other means, except Gisors, in compensation for which he granted to Richard the gift of the archbishopric of Tours; Philip’s son Louis was to marry Richard’s niece, the daughter of the king of Castille; and furthermore, Philip was to swear that he would to the utmost of his power assist Richard’s nephew Otto to obtain the imperial crown. Richard on his part was to give to Louis of France, with the hand of his niece, twenty thousand marks of silver and the castle of Gisors as her dowry. The execution of the treaty, however, was postponed till Richard should return from Poitou.[1263]