The war which followed was characteristic of both kings alike. Philip's attack took the form not of a regular invasion, but of a series of raids upon Eastern Normandy, whereby, in the course of the next three months, he made himself master of Thillier, Lions, Longchamp, La Fertéen-Braye, Orgueil, Gournay, Mortemer, Aumale, and the town and county of Eu. John was throughout the same period flitting ceaselessly about within a short distance of all these places; but Philip never came up with him, and he never but once came up with Philip. On July 7, 1202, the French King laid siege to Radepont, some ten miles to the southeast of Rouen. John, who was at Bonport, let him alone for a week, and then suddenly appeared before the place, whereupon Philip immediately withdrew. John, however, made no attempt at pursuit. According to his wont, he let matters take their course till he saw a favorable opportunity for retaliation. At the end of the month the opportunity came. At the conclusion of the treaty in May, 1200, Arthur, after doing homage to his uncle for Brittany, had been by him restored to the guardianship of the French King. The death of the boy's mother in September, 1201, left him more than ever exposed to Philip's influence; and it was no doubt as a measure of precaution, in view of the approaching strife between the kings, that John on March 27, 1202, summoned his "beloved nephew Arthur" to come and "do right" to him at Argentan at the octave of Easter. The summons probably met with no more obedience than did Philip's summons to John; and before the end of April Philip had bound Arthur securely to his side by promising him the hand of his infant daughter Mary. This promise was ratified by a formal betrothal at Gournay, after the capture of that place by the French; at the same time Philip made Arthur a knight, and gave him the investiture of all the Angevin dominions except Normandy.