The Emperor Sigismund had accompanied his royal host to a conference, at Calais, whither the Duke of Burgundy, who began to incline towards the English, had repaired. The Count of Armagnac was all-powerful in Paris, and King Henry was preparing a large army to attempt a fresh invasion of France. The Dauphin Louis was dead, poisoned, it was said, by the Armagnacs, who dreaded the influence of his father-in-law, the Duke of Burgundy. Prince John, who had become dauphin, had been accompanied to Compiègne by his brother-in-law, the Count of Hainault. He was quite a Burgundian, and did not long survive his elevation. "At the beginning of 1417," wrote the Duke of Burgundy, "our much dreaded lord and nephew was stricken one evening with so severe an illness that he died immediately; his lips, tongue, and face all swollen, which was a pitious sight, for like this are persons who are poisoned." The new dauphin, Charles, was but sixteen years of age; he belonged to the Armagnacs, who had caused Queen Isabel to be seized in the castle of Vincennes, and had imprisoned her at Tours. She had thereupon entered into friendly relations with the Duke of Burgundy, whose partisans had been driven in a mass from Paris. The English disembarked at the same time at Touques, in Normandy. From this period, and for twenty years, the history of England is made in France. Absorbed at first in their conquests, then in the attempt to preserve them, the English princes asked nothing of their native country but men and money. The towns of Normandy fell one after another into the power of King Henry: Caen was taken by storm; Lisieux, Bayeux, Laigle, had been abandoned by the population, who had taken refuge in Brittany. {25} Nothing arrested his triumphal march. In vain did the French deputies endeavor to negotiate; Henry demanded the hand of the Princess Catherine, and only consented to leave the royal title to Charles VI. on condition of governing during his lifetime as regent, and having possession of the crown after his death. The winter had arrived and the Scots had attempted an incursion into the Northern counties; but Bedford had repulsed them. In the beginning of the spring (1418), King Henry resumed his military operations. Large reinforcements had arrived from England; Cherbourg, Domfront, Louviers, Pont-de-l'Arche, besieged by large detachments, surrendered almost at the same time. The whole of Lower Normandy was in the hands of the conqueror, who established his government there. The salt tax was abolished, and the chancellor of the duchy was entrusted to govern with strict justice. On the 30th of July, the King of England laid siege to Rouen.