Such conduct very naturally incensed the king and his son against the citizens. Henry was angry with them, moreover, for having admitted the barons contrary to his express orders.(246) It is not surprising, therefore, that when Fitz-Thomas presented himself before the Barons of the Exchequer to be admitted to the mayoralty for the third year in succession, they refused to admit him by the king’s orders, Henry "being for many reasons greatly moved to anger against the city."(247) (M154) Before the end of the year (1263), both king and barons agreed to submit to the arbitration of the King of France. The award known as the Mise of Amien—from the place whence it was issue—which Louis made on the 23rd Jan., 1264, proved of so one-sided a character that the barons had no alternative but to reject it. However unjustifiable such repudiation on the part of the barons may have been from a moral point of view, it was a matter of necessity. Many of them, moreover, including those of the Cinque Ports, as well as the Londoners, and nearly all the middle class of England, had not been parties to the arbitration, and therefore, were not pledged to accept the award.(248) (M155) The citizens and the barons now entered into solemn covenant to stand by each other "saving however their fealty to the king." A constable and a marshal were appointed to command the city force, which was to stand prepared night and day to muster at the sound of the great bell of St. Paul’s. The manor of Isleworth, belonging to Richard, King of the Romans, the king’s brother, was laid waste, and Rochester besieged, but, disturbances again breaking out at home, Leicester had to hurry back to restore order and prevent the city being betrayed to the king’s son.(249) (M156) In May the earl set out again with a force of Londoners(250) to meet the king, who was threatening the Cinque Ports. In the early morning of the 14th he came upon the royal army at Lewes. Prince Edward himself led the charge against the Londoners—he had not forgotten the insult they had recently offered to his mother—and succeeded in driving them off the field. They scarcely indeed awaited his onslaught, so unpractised in warfare had they become of recent years, but turned their backs and sped away towards London, followed in hot pursuit by Edward. When he returned he found that, owing to his absence, the day was lost, and that his father and brother had been made prisoners.(251) In spite of his own success, he also had to surrender. (M157)