CHAPTER XVIII. — THE NORTHERN INVASION.

The news of Harold's marriage to Ealdgyth put an end to the demands of William of Normandy that Harold should take one of his daughters to wife, and in the complaints that he addressed to all Christendom against Harold the breach of his promise in this respect was placed far more prominently than his failure to carry out his oath to be the duke's man. It must have been evident indeed to all that it was beyond the power of the English king to keep this oath, obtained from him by force and treachery. He had been elected by the voice of the English people, and had no more power than the meanest of his subjects to hand the crown they had bestowed to another.

The breach of this oath, however, served to obtain all the aid that the church could give to William. Harold was solemnly excommunicated, and the struggle for which the duke was preparing thereupon assumed the character of a sacred war. In England itself the Bull of excommunication had no effect whatever. The great bulk of bishops and clergy were Englishmen, and thought far more of their king than of any foreign prince or prelate. Even the bishops and abbots of Norman blood disregarded the commination, and remained staunch to Harold. He had been a generous patron to the church, had maintained them in all the privileges and dignities that Edward had bestowed upon them, and possessed the love of the whole English people; therefore, in spite of bann and interdict the churches remained open, services were held as usual, and people were married and buried as if the Papal Bull had never been issued.

But it was not so on the Continent. The Norman barons as a body had at first refused to support the duke in an invasion of England, but as individuals they had been brought round to join in William's project, and to give far more aid in ships and men than they were bound to do by their feudal engagements. Having accomplished this, William issued an invitation to all adventurous spirits in Europe to join him in his crusade against the excommunicated King of England, promising that all should share alike in the plunder of England and in the division of its land. The bait was a tempting one. Some joined the enterprise merely for the sake of gaining glory under the banner of one who was regarded as the greatest military leader in Europe, others were influenced by love of gain, while, as in the crusades, numbers joined to obtain absolution for past misdeeds by taking part in an enterprise blessed by the Pope. Thus the force which William was collecting greatly exceeded that which the resources of Normandy alone could have set on foot.

Among the first to hurry to the court of William, as soon as Harold's accession to the throne was known, was Tostig, in whose mind the refusal of Harold to embark in a civil war for his sake, and to force him upon the people of Northumbria in spite of their detestation of him, was an injury not to be forgiven. The fact that Tostig was ready thus to sacrifice England to his own private quarrel showed a baseness and recklessness that could hardly be expected from his early career. William naturally accepted the alliance, received Tostig's oath of allegiance, and aided him in fitting out a number of ships manned by Norman and Flemish adventurers. Evading the watch kept by the English fleet they crossed the sea, landed, and plundered and ravaged a considerable extent of country, and then retired, Tostig being enraged that William of Normandy was unwilling to send an expedition to act in concert with him until the whole of his plans were prepared and his great army ready for sea.

Normandy indeed had been converted into a vast camp. In every port great numbers of workmen laboured night and day building ships, for Normandy had ceased to be a naval power, and its shipping was utterly insufficient to carry the great army across. Tostig, impatient and hasty, thought no more of the oath of allegiance that he had sworn to William. Driven from Yorkshire by the forces of the northern earls he sailed to Scotland, where he was welcomed by King Malcolm, both as a sworn brother and as the enemy of England. From Scotland he entered into negotiations with Harold Hardrada of Norway. This warlike monarch was in a fit mood to listen to his advances; he had for years been engaged in a struggle with Denmark, which he had ineffectually attempted to conquer, and had at last been forced to conclude a treaty of peace with Sweyn, its king.

Tostig had already endeavoured by personal persuasions to induce Sweyn to revive his claim to the crown of England, and to undertake its conquest; but he altogether declined to undertake so dangerous and difficult an enterprise, and Tostig had then turned to Harold of Norway. Whether his interview with him was before he went to Scotland or whether he went thence to Norway is a point on which historians differ. Some deny that any interview took place, but the balance of probability lies strongly in favour of an early interview, at which Harold entered heartily into Tostig's plans, and began at once to make preparations for the enterprise.

It was certain that an invading force from Norway would land in Northumbria, and Harold, although he might not be able to rely greatly upon the assistance of the northern earls as against the Normans, knew that they would do their best to defeat an expedition landing on their own shores, especially when Tostig was a sharer in the invasion. His own thoughts were wholly bent upon repelling the mighty expedition gathering in Normandy, and for this purpose, by immense efforts, he collected the greatest army and fleet that had ever been got together in England. An incessant watch was kept up along the coast where the Normans might be expected to land, while the fleet cruised for months between the Thames and the Isle of Wight prepared to give battle to the invaders.