Henry, like Rufus, commenced his reign with the taking of Winchester with its treasures. Flambard, who had been entrusted with the great episcopal castles of Durham and Norham, was imprisoned in the keep of London. The outlawry of Robert Malet and Robert de Lacy, in 1101, gave Henry their castles in Yorkshire and Suffolk; and in 1102 Ivo de Graintmaisnel was driven from his mound at Hinckley, and forced to flee the country. Also the King obtained, by forfeiture, the castles of William de Warenne, though these were afterwards restored. Henry, in 1103, laid his hands upon Arnulph de Montgomery’s castle of Pembroke, and on those of Robert of Poitou, his brother, between the Ribble and the Mersey. The death of William Earl of Moretaine brought in the almost impregnable hill-castle of Montacute, with Trematon, Launceston, Tintagel, Boscastle, and Restormel, and other Cornish fortresses. The fall of Robert de Belesme gave the crown the castles of Arundel,—a lesser Windsor in its plan, and scarcely inferior in its position; of Shrewsbury, the mound of which still towers over the Severn, and dwarfs even the extensive and incongruous railway-station at its foot; of Bridgenorth, where a fragment of the keep shows what it must once have been; and of Carreghova, of which the very traces are well-nigh effaced. Belesme retired to Normandy, where he is said to have been lord of thirty-four castles; but the fragments of his power only betrayed him into further rebellion, so that he ended his life a prisoner and an exile on the castled mound of Wareham. There still remained, indeed, in private hands a considerable number of castles, the owners of which found it convenient to give way, and thus to retain a portion of their influence. Such were Bourne in Lincolnshire; Malton, held by Fitz-John, in Yorkshire; Beaudesert in Warwickshire; the episcopal castles of Newark and Sleaford, and that of Oakham. There were also Warblington in Hampshire; and in Cumberland, Egremont and Cockermouth.