A negotiation now took place, when a truce was signed to last for three months; and the earl of Suffolk had four thousand five hundred francs for consenting to it. The truce was well kept until the end of June, which terminated it, as the two parties could not agree on a final peace, so that the war recommenced, and the English daily committed great waste on the country by fire and sword. To obviate these evils, the duke, and his brother the constable, had the town of Pontorson, which divides Normandy from Brittany, and is two leagues from Mont St Michel, well repaired and fortified, to serve as a barrier town against the English. A few days after this, the earl of Suffolk was dismissed from his government, and the earl of Warwick appointed in his stead, who assembled a considerable body of men and laid siege to Pontorson. During this siege, the English were in constant danger of having their convoys of provision cut off by the garrisons of Mont St Michel and other places. To prevent which, lord Scales was detached with five hundred combatants to lower Normandy to escort the convoys. On his return, the Bretons, who had been made acquainted therewith, placed themselves, to the amount of fifteen hundred men, in ambuscade, near to Mont Saint Michel, and, watching their opportunity, sallied out on the English, as they were marching by. They found them, however, in handsome array; and they made so valorous a resistance that the Bretons were completely routed. Eight hundred were slain; and in the number were the lord Château-Geron, the lord de Couesquen, the lord de Chambourg, the baron de Chamboches, the lord de la Hunaudes, sir Pierre le Porc, the commander of the Scotsmen, and many others of the nobility. The lord de Rohan and several great lords were made prisoners. This event was known in Pontorson by the English having caused the dead bodies of the baron de Soulenges and sir Pierre le Porc, and of others, to be brought to the walls, and delivered to the garrison for burial, and hastened their determination of surrendering to the earl of Warwick, on having their lives spared, as they had no longer hopes of succour. They were marched out of the town with white staves in their hands, leaving all their baggage and effects behind them. Lord Scales was made governor of the town. Toward the end of this year, sir John de Luxembourg assembled in Picardy, and the parts adjacent, about a thousand combatants, men at arms and archers, with the intent to besiege and reduce to his obedience the town of Beaumont in Argonne, held by William de Flavy, of the party of king Charles,--which Flavy, and those under his command, did many injuries and oppressive acts to all the surrounding country.