successful, and perhaps the most wicked of all crusades. William lost no time in solemnly demanding the crown of England as his by right, and formally calling on Harold to fulfil his oath; of course he expected the curt refusal which he received. It was no part of his policy to conceal his purpose: rather he hoped to awaken superstitious terrors in the minds of the English, and give them time to grow. His preparations however took many months, and when he was ready, contrary winds delayed the passage of the Channel for many weeks more, to his great advantage. Harold got together a large fleet to guard the Channel, and called out the _fyrd_ of the southern counties to defend the coast. But a body of men serving without pay is hard to keep together, and the imperfect resources of the age made it difficult to feed them. In September, when the summer was over, and no Norman expedition had appeared, Harold was obliged to disband his army, and let the fleet go back to London. Almost immediately he received the news that another and to all appearance more formidable enemy was on the point of invading England in the north. Tostig, Harold's brother, who had been driven out by his Northumbrian subjects, and whom Harold's justice had refused to support against them, thought he saw his opportunity for revenge and restoration. Whether he suggested to Harold Hardrada, king of Norway, that he should attempt to seize the English throne, or whether Hardrada had already thought of it as a fitting crown to his career of warlike adventure, is not clear. Certainly they united in the last, the greatest and the most disastrous of the Viking expeditions. With a fleet of several hundred ships, manned it is said by half the fighting population of his kingdom, Harold Hardrada crossed to the Orkneys, and drawing contingents from thence and from Scotland, sailed down the Northumbrian coast, plundering and destroying. Entering the Humber, he went up the Ouse as far as Riccall, some ten miles south of York, and leaving his ships there under a guard, marched upon York. Morcar the earl of Northumbria had so far made no attempt at resistance, but he had gathered the _fyrd_ of his earldom, and perhaps of his brother's also, for the two earls moved together from York to meet the invaders. On September 20 a battle took place at Fulford, only two miles from York, in which the earls, after a severe struggle, were decisively defeated. The city surrendered, and the Northmen withdrew to Stamford Bridge on the Derwent, eight miles east of York, to await the collecting of hostages in token of the submission of the whole earldom. King Harold, on hearing the news of his namesake's expedition, had hastily gathered what forces he could, and marched with all speed northwards. On the morning of September 25 he reached York, which had only surrendered the day before, and without halting went in search of the enemy.