The castle was demolished by the Scots, but was rebuilt by Henry the Second. In 1215 it was again besieged, this time by King John, who resented the defection of the northern barons; and it was captured, and again destroyed. In 1318 it was captured and destroyed by Robert Bruce. In 1341 it was besieged by David Bruce, but held out until relieved by King Edward, himself. In 1383 it was again besieged by the Scots, and part of its fortifications demolished. On the present occasion it was again captured, and razed to the ground. Another portion of the Scottish army, plundering and burning, advanced along the valley of the Coquet. As they approached, the inhabitants of the district round Alnwick began to pour into the castle; but orders were issued that all the fighting men should join the force of Sir Robert Umfraville, the sheriff of the district, who was gathering a force to give the Scots battle. "I fear that there is small chance of the Scots making their way hither," Oswald's instructor said, in lugubrious tones. "Sir Robert is a stout fighter, and the Scots, laden as they must be with booty, and having hitherto met with no resistance, will be careless and like to be taken by surprise. Methinks the abbot ought to send off a contingent, to aid Sir Robert." Oswald laughed. "I suppose he wants to keep them for more urgent work, and thinks that the Church should only fight when in desperate straits. However, Father, you may have an opportunity yet; for we cannot regard it as certain that Sir Robert will defeat the Scots." Three days later, however, the news arrived that Sir Robert had attacked the Scots, at Fulhetlaw, and utterly defeated them; taking prisoner Sir Richard Rutherford and his five sons, together with Sir William Stewart, John Turnbull, a noted border reiver, and many others; and that those who had escaped were in full flight for the border. The Scotch incursion had made no change in Oswald's work. He continued to study hard with the monk. As a rule, he fully satisfied his teacher; but at times, when he failed to name the letters required to make up a certain sound, the latter lost all patience with him; and, more than once, with difficulty restrained himself from striking him. Spelling in those days, however, had by no means crystallized itself into any definite form, and there was so large a latitude allowed that, if the letters used gave an approximate sound to the word, it was deemed sufficient.