Matters having thus been settled, William, with Edgar Atheling under his wing, and Rufus in attendance, embarked for the Continent. Having set his iron heel once more on Norman soil, the Conqueror first shipped off the grandson of Ironside to Apulia, with a retinue of two hundred knights, and then applied himself to his dispute with the heir of Hugh Capet. It appears that the real cause of debate between William and Philip was the country of Vexin, situated between the Epte and the Oise. This territory had been wrested from Normandy and united to France during the troubles consequent upon the rumoured death of Robert the Devil. William, less inclined than of yore to submit the question of possession to the arbitrament of the sword, flattered himself that he should be able to regain the Vexin by peaceful means, and with this hope opened negotiations. While negotiations were pending, William, whose corpulence had caused him serious inconvenience, felt the necessity of placing himself in the hands of his physicians and, by their advice, he kept his bed, and attempted to reduce himself by a rigorous diet. Philip, deeming that he had little to fear from such an adversary, returned evasive replies to William's demands, and found that the Conqueror bore the delay so patiently, that he ventured one day, at Paris, to indulge, at William's expense, in a coarse jest, which was faithfully repeated at Rouen. "By my faith!" said Philip, "our cousin, the King of England, is very long about his lying-in! What rejoicings there will be when he gets up! What a number of candles I must provide for his churching!" "Ha!" angrily exclaimed William, when told what Philip had said, "no cost shall the King of France incur on that day for candles or lights. For," added he, his anger rising and swelling into fury, "by the splendour and birth of God! I will be churched at Notre Dame de Paris with ten thousand lances for my candles." While the blood of William was boiling with indignation at his liege lord's insulting jest, an incident occurred which must have added much to his annoyance. Curthose, falling under Philip's influence, and allured by Philip's promises, broke once more with his father, and prepared for the third time to leave the Norman court. William stormed as was his wont on such occasions, cursed his son's folly, and heaped maledictions on his head. Curthose, however, paid no regard to the reproaches of a sire with whom he could not agree; though it could hardly have been without reluctance that he left the duchy of which he was the recognised heir, to sit at the hearth, and feed at the board, and climb the stairs of strangers. But, whatever his feelings, Curthose did go; and the grim Conqueror cursed him as he departed.