Earl Haakon had now peace for some years. He had, as soon as he had conquered the sons of Gunhild, married the beautiful Thora, daughter of the powerful chieftain Skage Skoftesson: and had by her two sons, Sweyn and Heming, and a daughter, Bergljot. Considerably older than these children, was the earl's illegitimate son, Erik, who, according to one account, was born when his father was but fifteen years old. There is, however, good reason for questioning this statement. Erik was a stubborn and turbulent youth, who could not be induced to respect the authority of his father. When he was ten or eleven years old, he got into a dispute with Haakon's brother-in-law Tiding-Skofte, about the right to anchor his ship next to the earl's. Tiding-Skofte, who was a great favorite of the earl's, had been especially granted this privilege and was inclined to insist upon it. To avenge this insult Erik watched his chance and slew him a year later. He thereby incurred the hostility of his father, and fled to Viken, where Sweyn Forkbeard gave him a cordial reception. It was scarcely to be expected that Harold Bluetooth should quietly accept the humiliation which Earl Haakon had put upon him. He was, indeed, getting too old himself to measure strength again with his powerful antagonist; and he therefore delegated the task of punishing him to his friends and allies. Among the latter were the celebrated Jomsvikings, who lived at Jomsborg, on the island of Wollin, at the mouth of the river Oder. These vikings were a well-disciplined company of pirates, who made war their exclusive business, living by rapine and plunder. They were bound by very strict laws to obey their chief, to spurn death and danger, to aid each other, and to endure pain uncomplainingly. Like the Italian condottieri, they were willing to serve any master with whom their chief could make satisfactory arrangements. For women they professed contempt, and no woman was permitted to enter their burgh. These formidable marauders Harold Bluetooth endeavored to stir up against his rebellious vassal. At a funeral feast which their chief, Earl Sigvalde, made in honor of his father, a great throng of warriors were present; the ale and mead flowed abundantly, and there was much good cheer in the hall. When Earl Sigvalde rose to drink the toast to Brage, he vowed that before three winters were past he would kill Earl Haakon or expel him from his realm, or himself die in the attempt. The other vikings, not wishing to be outdone by their chief, made vows scarcely less daring; and the enthusiasm rose to such a pitch that no achievement seemed beyond their strength. When they woke up the next morning, the affair wore a slightly different aspect; but having once promised, they could not retreat. So they made a virtue of necessity, and prepared in haste for the attack. The rumor of their vows had, however, preceded them, and reached Erik, the son of Earl Haakon. Disregarding his father's