The next year (994) King Sweyn of Denmark joined the fleet of Olaf and his associates and new purposes began to appear. Instead of seeking promiscuous plunder, the invaders attempted to reduce cities and strongholds. Once more the English sued for peace on the basis of tribute.[41] Sweyn evidently returned to Denmark where his presence seems to have been sorely needed. For two years England enjoyed comparative peace. The energies of the North found other employment: we read of raids on the Welsh coast and of piratical expeditions into Saxony; interesting events also occurred in the home lands. To these years belong the revolt of the Norsemen against Earl Hakon, and perhaps also the invasion of Denmark by Eric the Victorious.
Thirty years of power had developed tyrannical passions in the Norwegian Earl. According to the sagas he was cruel, treacherous, and licentious. Every year he became more overbearing and despotic; every year added to the total of discontent. Here was Sweyn Forkbeard's opportunity; but he had other irons in the fire, and the opportunity fell to another. About 995 a pretender to the Norse throne arrived from the West,—Olaf Trygvesson, the great-grandson of Harold Fairhair.
Our earliest reliable information as to Olaf's career comes from English sources; they tell of his operations in Britain in 991 and 994 and the circumstances indicate that the intervening years were also spent on these islands. While in England he was attracted to the Christian faith, a fact that evidently came to be known to the English, for, in the negotiations of 994, particular attention was paid to the princely chieftain. An embassy was sent to him with Bishop Alphege as leading member, and the outcome was that Olaf came to visit King Ethelred at Andover, where he was formally admitted to the Christian communion, Ethelred acting as godfather.[42]
At Andover, Olaf promised never to come again to England "with unpeace"; the Chronicler adds that he kept his word. With the coming of spring he set out for Norway and never again saw England as friend or foe. We do not know what induced him at this time to take up the fight with Hakon the Bad; but doubtless it was in large measure due to urging on the part of the Church. For Olaf the Viking had become a zealous believer; when he landed in Norway he came provided with priests and all the other necessaries of Christian worship. It is not necessary to tell the story of the Earl's downfall,—how he was hounded into a pig-sty where he died at the hands of a thrall. Olaf was soon universally recognised as king and proceeded at once to carry out his great and difficult purpose: to christianise a strong and stubborn people (995).[43]
As to the second event, the invasion of Sweyn's dominions by the King of Sweden, we cannot be so sure, as most of the accounts that have come down to us are late and difficult to harmonise. Historians agree that, some time toward the close of his reign, King Eric sought revenge for the assistance that the Danish King had given his nephew Styrbjörn in his attempt to seize the Swedish throne. The invasion must have come after Sweyn's accession (986?) and before Eric's death, the date of which is variously given as 993, 995, 996.[44] If Eric was still ruling in 994 when Sweyn was absent in England, it is extremely probable that he made use of a splendid opportunity to seize the lands of his enemy. This would explain Sweyn's readiness to accept Ethelred's terms in the winter of 994-995.[45]
After the death of King Eric, new interests and new plans began to germinate in the fertile mind of Sweyn the Viking. Late in life the Swedish King seems to have married a young Swedish woman who is known to history as Sigrid the Haughty. Sigrid belonged to a family of great wealth and prominence; her father Tosti was a famous viking who had harvested his treasures on an alien shore. Eric had not long been dead before wooers in plenty came to seek the hand of the rich dowager. So importunate did they become that the Queen to get rid of them is said to have set fire to the house where two of them slept. Olaf Trygvesson was acceptable, but he imposed an impossible condition: Sigrid must become a Christian. When she finally refused to surrender her faith, the King is said to have stricken her in the face with his gauntlet. The proud Queen never forgave him.
Soon afterwards Sigrid married Sweyn Forkbeard who had dismissed his earlier consort, Queen Gunhild, probably to make room for the Swedish dowager. We do not know what motives prompted this act, but it was no doubt urged by state-craft. In this way the wily Dane cemented an alliance with a neighbouring state which had but recently been hostile.[46]
The divorced Queen was a Polish princess of an eminent Slavic family; she was the sister of Boleslav Chrobri, the mighty Polish duke who later assumed the royal title. When Gunhild retired to her native Poland, she may have taken with her a small boy who can at that time scarcely have been more than two or three years old, perhaps even younger. The boy was Canute, the King's younger son, though the one who finally succeeded to all his father's power and policies. The only information that we have of Canute's childhood comes from late and not very reliable sources: it is merely this, that he was not brought up at the Danish court, but was fostered by Thurkil the Tall, one of the chiefs at Jomburg and brother of Earl Sigvaldi.[47] The probabilities favour the accuracy of this report. It was customary in those days to place boys with foster-fathers; prominent nobles or even plain franklins received princes into their households and regarded the charge as an honoured trust. Perhaps, too, a royal child would be safer among the warriors of Jomburg than at the court of a stepmother who had employed such drastic means to get rid of undesirable wooers. The character of his early impressions and instruction can readily be imagined: Canute was trained for warfare.
When the young prince became king of England Thurkil was exalted to a position next to that of the ruler himself. After the old chief's death, Canute seems to have heaped high honours on Thurkil's son Harold in Denmark. We cannot be sure, but it seems likely that this favour is to be ascribed, in part, at least, to Canute's affection for his foster-father and his foster-brother.
In those same years another important marriage was formed in Sweyn's household: the fugitive Eric, the son of Earl Hakon whose power was now wielded by the viking Olaf, had come to Denmark, where Sweyn Forkbeard received him kindly and gave him his daughter Gytha in marriage. Thus there was formed a hostile alliance against King Olaf with its directing centre at the Danish court. In addition to his own resources and those of his stepson in Sweden, Sweyn could now count on the assistance of the dissatisfied elements in Norway who looked to Eric as their natural leader.