20. =Royalist Reaction and Civil War. 1261.=--Henry now ruled again in his own fashion. Even the Earl of Gloucester discovered that if the king was to be resisted it must be by an appeal to a body of men more numerous than the barons alone. He joined Simon in inviting a Parliament to meet, at which three knights should appear for each county, thus throwing over the unfortunate narrowing of Parliament to a baronial committee of twelve, which had been the worst blot on the Provisions of Oxford. In the summer of =1262= the Earl of Gloucester died, and was succeeded by his son, Earl Gilbert, one of Simon's warmest personal admirers. In =1263= Simon, now the acknowledged head of the barons and of the nation, finding that the king could not be brought to keep the Provisions, took arms against him. He was a master in the art of war, and gained one fortified post after another. Henry, being, as usual, short of money, called on the Londoners for a loan. On their refusal Edward seized a sum of money which belonged to them, and so exasperated them that, on the queen's passing under London Bridge, the citizens reviled her and pelted her with stones. The war was carried on with doubtful results, and by the end of the year both parties agreed to submit to the arbitration of the king of France. 21. =The Mise of Amiens. 1264.=--The king of France Louis IX., afterwards known as St. Louis, was the justest and most unselfish of men. In =1259= he had surrendered to Henry a considerable amount of territory in France, which Henry had been unable to reconquer for himself; and was well satisfied to obtain from Henry in return a formal renunciation of the remainder of the lands which Philip II. had taken from John. Yet, well-intentioned as Louis was, he had no knowledge of England, and in France, where the feudal nobility was still excessively tyrannical, justice was only to be obtained by the maintenance of a strong royal power. He therefore thought that what was good for France was also good for England, and in the beginning of =1264= he relieved Henry from all the restrictions which his subjects had sought to place upon him. The decision thus taken was known as the Mise, or settlement, of Amiens, from the place at which it was issued. 22. =The Battle of Lewes. 1264.=--The Mise of Amiens required an unconditional surrender of England to the king. The Londoners and the trading towns were the first to reject it. Simon put himself at the head of a united army of barons and citizens. In the early morning of May 14 he caught the king's army half asleep at Lewes. Edward charged at the Londoners, against whom he bore a grudge since they had ill-treated his mother, and cleared them off the field with enormous slaughter. When he returned the battle was lost. Henry himself was captured, and Richard, king of the Romans, was found hiding in a windmill. Edward, in spite of his success, had to give himself up as a prisoner.