At length the violence of the two princes brought it to a battle: for Louis, to give a reputation to his arms, advanced towards the frontiers of Normandy, and after a short siege took Gué Nicaise;[23] there the King met him, and the fight began, which continued with great obstinacy on both sides for nine hours. The French army was divided into two bodies, and the English into three; by which means, that part where the King fought in person, being attacked by a superior number, began to give way; and William Crispin, a Norman baron, singling out the King of England (whose subject he had been, but banished for treason) struck him twice in the head with so much violence, that the blood gushed out of his mouth. The King inflamed with rage and indignation, dealt such furious blows, that he struck down several of his enemies, and Crispin among the rest, who was taken prisoner at his horse's feet. The soldiers encouraged by the valour of their prince, rallied and fell on with fresh vigour, and the victory seemed doubtful, when William the son of King Henry, to whom his father had entrusted the third body of his army, which had not yet engaged, fell on with this fresh reserve upon the enemy, who was already very much harassed with the toil of the day: this quickly decided the matter; for the French, though valiantly fighting, were overcome, with the slaughter of several thousand men; their King quitted the field, and withdrew to Andely; but the King of England recovering Gué Nicaise, returned triumphant to Rouen. [Footnote 23: At that time reckoned an important fortress on the river Epte. [D.S.]] This important victory was followed by the defection of the Earl of Anjou to King Henry, and the Earl of Flanders fell in the battle; by which the King of France was at once deprived of two powerful allies. However, by the intercession of the former, a peace was soon after made between both crowns. William the King's son did homage to Louis for the Dukedom of Normandy; and the other William, following the fortunes of his father, was left to his pretensions and complaints. It is here observable, that from this time until Wales was subdued to the English crown, the eldest sons of England were called Dukes of Normandy, as they are now Princes of Wales. 1120.