In the year 1098 Magnus, king of Norway, had appeared for a moment with a hostile fleet off the island of Anglesey. Some reason not certainly known had brought him round Scotland, perhaps to make an attack on Ireland. He was the grandson of the King Harold of Norway, who had invaded England on the eve of the Norman Conquest and perished in the battle of Stamford Bridge, and he had with him, it is said, a son of Harold of England: to him the idea of a new invasion of England would not seem strange. At any rate, after taking possession of the Isle of Man, he came to the help of the Welsh against the earls, Hugh of Chester and Hugh of Shrewsbury, who were beginning the conquest of Anglesey. The incident is noteworthy because, in the brief fighting which occurred, the Earl of Shrewsbury was slain. His death opened the way for the succession of his brother, Robert of Bellême, to the great English possessions of their father in Wales, Shropshire, and Surrey, to which he soon added by inheritance the large holdings of Roger of Bully in Yorkshire and elsewhere. These inheritances, when added to the lands, almost a principality in themselves, which he possessed in southern Normandy and just over the border in France, made him the most powerful vassal of the English king. In character he had inherited far more from his tyrannous and cruel mother, Mabel, daughter of William Talvas of Bellême, than from his more high-minded father, Roger of Montgomery, the companion of the Conqueror. As a vassal he was utterly untrustworthy, and he had become too powerful for his own safety or for that of the king. Some minor events of these years should be recounted. In 1097 William had sent Edgar the atheling to Scotland with an army, King Donald had been overthrown, and Edgar's nephew, himself named Edgar, with the support of the English king, had been made king. In 1099 Ranulf Flambard received the reward of his faithful services, and was made Bishop of Durham, in some respects the most desirable bishopric in England. Greater prospects still of power and dominion were opened to William a few months before his death, by the proposition of the Duke of Aquitaine to pledge him his great duchy for a sum of money to pay the expenses of a crusade. To add to the lands he already ruled those between the Loire and the Garonne would be almost to create a new monarchy in France and to threaten more dangerously at this moment the future of the Capetian kingdom than did two generations later the actual union of these territories and more under the king of England.