It was the autumn of 1069, when the Saxons and Danes, after uniting their forces, marched upon York, the Saxons forming the van, the Danes the main army. Messengers went before, announcing deliverance from the invaders; and, ere long, the Normans were surprised to find the city invested on all sides. For several days the garrison offered a brave resistance, but on the eighth day—it was Saturday, the 19th of September—the besiegers had made such progress that the Normans, seeing that they must depend on their citadel, and fearing that the neighbouring houses might be used as materials for filling up the moats, set them on fire. The flames, leaping from house to house, made rapid progress; and the Northumbrians and their Danish allies, guided by the light, penetrated within the walls.

The Normans now took to the citadel, and still hoped to save themselves. The assault of the besiegers, however, proved irresistible. The citadel was taken. A conflict of the most desperate character took place: the Northumbrians and the Danes sought to excel each other in deeds of valour; and thousands of Normans fell in the sanguinary encounter. The victors granted quarter to William Malet and his wife and children, who were conveyed on board the Danish fleet, and then imprudently proceeded to destroy the fortifications erected by the Normans, in order to efface all vestiges of the invasion. This done, they raised the shout of triumph, and expressed their impatience for the arrival of spring to march southward, and drive the conquerors from the land. Meanwhile, as King of England, Edgar Atheling concluded a treaty of alliance with the citizens of York, and had the gratification of being recognised from the Humber to the Tweed.

William was hunting in the Forest of Dean when he received intelligence that the Northumbrians had killed Robert Comine at Durham, and taken possession of York. The wrath of the Norman king burned fiercely.

"By the Divine splendour!" he exclaimed, "I will never again lay aside my lance till I have slain all the Northumbrians;" and he prepared forthwith to execute his threat. But, resolved to facilitate operations by buying off the Danes, he sent messengers to the Danish king's brother, with offers of a large sum of money; and the Dane, yielding to temptation, agreed to take the bribe, and withdrew without striking another blow.

Having thus deprived the Northumbrians of their allies, William assembled an army composed of picked soldiers, and, by forced marches, suddenly appeared at York. The Northumbrians, taken by surprise, and dispirited by the departure of the Danes, nevertheless girded themselves up for the combat, resisted with the courage of despair, and fell by thousands while attempting to oppose the Conqueror's passage through the breaches of the walls. But long as was the struggle, and dearly-purchased as was William's success, his victory was complete. Edgar Atheling left as a fugitive the land of his ancestors, and all who could, made their escape northward.

Finding himself once more master of York, William determined to extend his conquest to the Tweed. Cruelly and savagely the work was begun. Precipitating themselves on Northumberland, the Normans wreaked their fury on all that the land contained. Flocks and herds were massacred as well as men; corn-fields were burned with the towns and hamlets they surrounded; and the devastation seems to have been pursued on such a scale as to render the country uninhabitable. Wasting, burning, slaughtering as they went, the Normans at length reached Durham, which in the previous year had witnessed the death of Robert Comine.

When, one winter's day, news of the Conqueror's approach reached Durham, the bishop and his clergy were well-nigh in despair. It was the very depth of the season. Nevertheless, they resolved to be gone.

"Let us fly," they cried, "to some place where neither Norman, nor Burgundian, nor brigand, nor vagabond can reach us."

Accordingly they set out for Holy Island, carrying with them the bones of St. Cuthbert and all their moveables of value. They left, however, a crucifix, richly adorned with gold and silver gems, which had, in other days, been presented to the church by Tostig, the son of Godwin, and his haughty countess, Judith of Flanders. This crucifix appears to have been too heavy for the monks to carry. But they consoled themselves with the idea that, instead of tempting sacrilege, it would act as a protection to the church, and to the sick and infirm persons who had crawled to seek refuge within the sacred precincts, and who, overcome with pain, and misery, and fatigue, lay in crowds on the bare stones.

While the bishop and clergy were flying, William entered Durham, and the Normans took possession of the city, without being disturbed in their slumbers as Robert Comine had been. Indeed, resistance was now scarcely thought of, even by the most desperate; and the conquering army traversed Northumberland in all directions, killing the unresisting. The sufferings of the inhabitants were fearful. Between the Humber and the Tweed, more than a hundred thousand human beings perished by famine and the sword; and many, bidding farewell for ever to the fields and homesteads of their fathers, hurried northward, and sought safety in the Merse and Lothian.