Early in the year 1091, the Red King landed an English army in Normandy, and advanced into the country. Robert again applied to Philip of France who exerted himself to arrange a treaty of peace between the two brothers. By the provisions of this treaty, which was signed at Caen, the lands of Eu, Albemarle, Fécamp, and others, were assigned to Rufus; and it was agreed that no further attempt should be made by Robert upon the English throne. Robert was to be aided to conquer the districts of Maine and portions of Henry's territory in place of those which he resigned in Normandy, and William engaged to pardon those barons who had defended his brother's cause, and to restore to them their titles and lands. The barons of the two factions agreed that if the king survived the duke, he was to have possession of Normandy; and if the duke outlived the king, he should receive the English crown. This treaty was signed by twelve barons on each side, who swore to maintain its provisions. Peace had been concluded between the two elder sons of the Conqueror; but it only produced war between Robert and Rufus, on the one side, and Henry on the other. Finding that his brothers were combining to despoil him, Henry seized St. Michael's Mount, a solitary rock on the coast of Normandy, and in this strong position he sustained a long siege from the combined armies of his kinsmen. An incident of the siege is related by some of the old chroniclers to the following effect:--The supply of water in the castle fell short, and the garrison were reduced to great distress from thirst. Robert, having been informed of this circumstance, sent a supply of wine to his brother Henry, and also permitted some of the people of the castle to fetch water. This conduct incensed William, who expressed his indignation at such generosity; but Robert replied that he could not suffer his brother to die of thirst. "Where," said he, "shall we get another brother when he is gone?" There is another story told of the same siege, from which it appears that on one occasion Rufus had a narrow escape from death. The king had ridden out alone to take a survey of the fortress, when he was suddenly attacked by two of Henry's soldiers, who struck him from his horse. One of the men was about to dispatch him, when Rufus called out, "Hold, knave! I am the King of England!" The soldier threw down his dagger, and raised him from the ground with professions of respect. It is related that Rufus rewarded the man with presents, and took him into his service.