The marriage was celebrated in Rouen on August 26, 1127, and the festival, which was marked with all the splendour which the wealth of Henry could command, was prolonged during three weeks. On the first day heralds went about the streets, commanding in the king's name that all men whatsoever should take part in the festivities, and that any man neglecting to make merry on the joyful occasion should be considered guilty of an offence against the king. Meanwhile, William of Normandy had obtained a position of power and influence which gave Henry much uneasiness. When Fulk of Anjou abandoned his connection with the son of Robert, the cause of the latter was still upheld by Louis, King of France. Charles the Good, Count of Flanders, the successor of Baldwin, was murdered by his own people while attending a service of the church in Bruges, and Louis gave that county to William. The Flemings, who at first received their new earl without opposition, broke out into revolt after the departure of the French king, and sent to ask the support of Henry. William, however, was not without supporters, and his personal gallantry, joined to high military talents, gave him the victory over the insurgents in various encounters. His career, however, was destined to be short; in an engagement under the walls of Alost, in which he completely defeated his opponents, the son of Robert received a wound on the head, which proved fatal within a few days afterwards. He died on the 27th of July, 1128, at the age of twenty-six. Henry was thus relieved from any dread of the pretensions of his nephew, and he passed over into Normandy. In 1133 Matilda gave birth to a son, who was named Henry, and who afterwards reigned in England with the title of Henry II. Subsequently two other sons, named Geoffrey and William, were the fruit of this marriage. On the birth of his grandson, the king again endeavoured to secure to his race the succession to the throne by causing the barons once more to swear fealty to Matilda and to her children. During Henry's stay in Normandy, various quarrels took place between the ex-empress and her husband, and the king had great difficulty in keeping the peace between them. It would appear that Matilda seized every opportunity of prejudicing her father against her husband, who was exasperated at the king's refusal to place him in immediate possession of Normandy.