19. The Breach amongst the Barons. 1259—1261.—Simon had no wish to be involved in a purely baronial policy. He had already fallen out with Richard de Clare, Earl of Gloucester, the leader of the barons who had resisted the full execution of the promises made at Oxford in the interest of the people at large. "With such fickle and faithless men," said Simon to him, "I care not to have ought to do. The things we are treating of now we have sworn to carry out. And thou, Sir Earl, the higher thou art the more art thou bound to keep such statutes as are wholesome for the land." The king fomented the rising quarrel, and in 1261 announced that the Pope had declared the Provisions to be null and void, and had released him from his oath to observe them.

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.

A fight between armed and mounted knights of the time of Henry III.