This agreement did not bring warfare to an end in France, however, since John's mismanagement of Aquitaine led the province to erupt in rebellion later in 1200, a disturbance that Philip secretly encouraged. To disguise his ambitions, Philip invited John to a conference at Andely and then entertained him at Paris, and both times he committed to complying with the treaty. In 1202, disaffected patrons petitioned the French king to summon John to answer their charges in his capacity as John's feudal lord in France. John refused to appear, so Philip again took up Arthur of Brittany's claims to the English throne and betrothed his six-year-old daughter Marie. In riposte John crossed over into Normandy. His forces soon captured Arthur, and in 1203, the young man disappeared, with most people believing that John had had him murdered. The outcry over Arthur's fate saw an increase in local opposition to John, which Philip used to his advantage. He took the offensive and, apart from a five-month siege of Andely, swept all before him. After Andely surrendered, John fled to England. By the end of 1204, most of Normandy and the Angevin lands, including much of Aquitaine, had fallen into Philip's hands.