One day in the winter of 1023, Grettir came down from his place of vantage, and went over the marshes to a farm called Acres, and drove away from it two bullocks fit for slaughtering, and several sheep, and he had got on with them some way over the marshes, on his way to his lair, before the farmer at Acres was aware of his loss; he had taken six wethers beside from another farm named Brookbend. This angered the farmers greatly, and they sent a message to the chief man of the district, Thord at Hitness, and urged him to waylay Grettir before he could reach his den. Thord shrank from doing anything; however, they pressed him so much that at last he consented to let his son Arnor go with them. Then messengers were sent throughout all the country side, to every farmer who was concerned. And it was so planned that two bodies of men should march to the taking of Grettir, one on the right, the other on the left bank of the Hit River, so as to take him for certain.

Grettir was soon aware that the country was roused. He was not alone, he had two men with him—one the son of the farmer at Fairwood Fell, with whom he was on good terms, the other a farm-servant. They advised him to desert the cattle and sheep and run for it, cross the river and take refuge in his place of vantage; but this Grettir was too proud to do.

Presently he could see coming on behind him a large band of men, about twenty in all, under Thorarin of Acres and Thorfin of Brookbend. Now, as these were pursuing him over the marshes, up the opposite side of the river came Arnor, the son of Thord of Hitness, and with him a farmer named Biarni of Jorvi.

Grettir managed to reach the river before his enemies came up with him, and he had also time to secure a place of vantage. This was a ness of rock that ran out into the river, or round which the river swept, so that he was protected by the water on all sides but one. Grettir said to the two men with him, that they must guard his back, see that none came up the sides in his rear, and then he took his short-sword in both his hands, planted his feet wide apart on the rock, and prepared to sell his life dear.

The party headed by Thorarin of Acres and Thorfin of Brookbend came up, twenty in all,—but more were coming, for Thorarin had begun the pursuit before all the farmers were collected, and he knew that a body of some twenty or thirty more would arrive before long. Thorarin himself was an old man, and he did not enter into the fray, but urged on his men.

The fight was hard. Grettir was not easily reached where he stood, and he smote at all who approached. Some of the Marshmen fell, and several were wounded. In vain did they attempt to dislodge him by combined rushes, he drove them over the edge into the water, or cut them down with his sword. At last his arm was weary, and he called to the farmer's son to step into his place. He did so, and held the ground valiantly, whilst Grettir rested. Then the party drew back, discomfited. At that moment up came the fresh body of men under Thrand, the brother of Thorarin of Acres, and Stonewolf of Lavadale. These egged on their men eagerly, and they thought they would obtain an easy victory, for Grettir had been fighting for some time, and was weary.

Then Thorarin of Acres called out and advised delay.

"For," said he, "the third party of men under Arnor and Biarni of Jorvi have not come up on the other side of the river."

This piece of advice was rejected by the newcomers. What did they want with more men? They were a large party, fresh and untired, and Grettir had but two men with him, and they were wearied with fighting. So the signal was given for the onslaught.

Then Grettir saw that he must either jump into the river, swim across, and desert the sheep and bullocks he had driven there, or use almost superhuman exertions to defend himself.