Thorsteinn Dromund was a wealthy man and highly thought of. On hearing of Angle's departure to Constantinople he handed over his property to his kinsmen and followed him, dogging his movements as he went, without Angle knowing. He reached Constantinople very soon after Angle, intending at all costs to kill him. Neither knew of the other.

Both wanted to be received into the Varangian Guards, and their offer was well received directly it was known that they were Norsemen. At that time Michael Catalactus was king over Constantinople. Thorsteinn Dromund watched for an opportunity of meeting Angle where he might recognise him, but failed amidst the crowd, so he kept on the watch, caring little for his own well-being and ever thinking how much he had lost.

The next thing that happened was that the Varangians were ordered on field service for the defence of the country. The custom and the law were that before they marched a review was held for the inspection of their weapons; this was done on the present occasion. On the day appointed for the review all the Varangians and all who were marching with them had to appear and show their arms. Thorsteinn and Angle both presented themselves. Thorbjorn was the first to show his weapons and he presented the sword Grettisnaut. As he showed it all marvelled and declared that it was indeed a noble weapon, but said it was a bad fault that a piece was out of the middle of the edge, and they asked how that had come about. Angle said that was a tale worth telling.

"The first thing I must tell you," he said, "is that out in Iceland I slew a hero named Grettir the Strong. He was a tremendous warrior and so valorous that no one could succeed in killing him until I came. But as I was destined to be his slayer, I overcame him, although he was many times stronger than I am. I cut off his head with this sword and broke a piece out of the edge."

Those who stood by said he must have had a hard skull, and they showed the sword round. From this Thorsteinn came to know which was Angle, and asked to be shown the sword with the others. Angle willingly showed it to him, for they were all praising his strength and courage, and he, having no notion of its being Thorsteinn or any relation of Grettir, thought he would do likewise. Dromund took the sword, at once raised it aloft and struck a blow at Angle. It came into his head with such force that it penetrated to his jaw and Thorbjorn fell dead to the ground. Thereupon all the men became silent. The officer of the place put Thorsteinn under arrest and asked him why he had committed such a breach of discipline in the sanctity of the Assembly. Thorsteinn said he was a brother of Grettir the Strong and that he had never been able to obtain his vengeance till that moment. Then many of them stood up for him and said there was much excuse for a man who had come such a long way to avenge his brother. The elders of the town thought that this might be true, but as there was no one present to bear out his word they fell back upon their own law, which declared that any man who slew another should lose nothing else than his life.

Judgment was quickly passed upon Thorsteinn, and it was rather hard. He was to sit in a dark chamber in a dungeon and there await his death unless some one came to pay a ransom for him. When he reached the dungeon he found a man who had been there a long time and was all but dead from misery. It was both foul and cold. Thorsteinn asked him: "How do you find your life?"

"Most evil," he replied; "no one will help me, for I have no kinsmen to pay a ransom."

"There are many ways out of a difficulty," said Thorsteinn, "let us be happy and do something to cheer ourselves."

The man said he had no joy in anything.

"We will try it," said Thorsteinn.

Then he began to sing songs. He was such a singer that it would be hard to find his like, and he spared nothing. The dungeon was close to the public road and Thorsteinn sang so loud that it resounded from the walls; the man who before was half dead had much joy therefrom. In this way he sang every evening.