The King now found himself sufficiently strong to take the field. He was disappointed in an attempt to obtain possession of Dover; but nearly succeeded in surprising the Earl of Leicester, who with a small body of forces had marched from Kenilworth to Southwark. Henry appeared on one side of the town, the Prince on the other; and the royalists had previously closed the gates of the city. So imminent was the danger that the Earl, who had determined not to yield, advised his companions to assume the cross, and to prepare themselves for death by the offices of religion. But the opportunity was lost by a strict adherence to the custom of the times. A herald was sent to require him to surrender; and in the mean while the populace, acquainted with the danger of their favorite, burst open the gates and introduced him into the city. The power of the two parties was now more equally balanced, and their mutual apprehensions inclined them to listen to the pacific exhortations of the bishops. It was agreed to refer every subject of dispute to the arbitration of the King of France; an expedient which had been proposed the last year by Henry, but rejected by Leicester. Louis accepted the honorable office, and summoned the parties to appear before him at Amiens. The King attended in person; the earl, who was detained at home in consequence of a real or pretended fall from his horse, had sent his attorneys. Both parties solemnly swore to abide by the decision of the French monarch. Louis heard the allegations and arguments of each, consulted his court, and pronounced judgment in favor of Henry. He annulled the Provisions of Oxford as destructive of the rights of the crown and injurious to the interests of the nation; ordered the royal castles to be restored; gave to the King the authority to appoint all the officers of the state and of his household, and to call to his council whomsoever he thought proper, whether native or foreigner; reinstated him in the same condition in which he was before the meeting of the "Mad Parliament," and ordered that all offences committed by either party should be buried in oblivion. This award was soon afterward confirmed by Pope Urban; and the Archbishop of Canterbury received an order to excommunicate all who, in violation of their oaths, should refuse to submit to it.