Olaf Haraldson, after his death called Olaf the Saint, was the son of Harald Grenske and Aasta. Harald Grenske, who, as we have seen, at one time governed Viken under the suzerainty of the Danish king, was the grandson of Biorn the Merchant--who was killed by Erik Blood-Axe--and a great-grandson of Harald the Fairhaired. Olaf was born shortly after the death of his father. His mother Aasta was then staying at the home of her father, Gudbrand Kula, a mighty man in the Uplands. Soon afterward, Aasta was married again to Sigurd Syr, who was king in Ringerike and a descendant of Harald the Fairhaired, and in his house Olaf was brought up. When King Olaf Trygvason came to Ringerike to spread Christianity, he induced Sigurd Syr and his whole family to be baptized, and he acted as godfather at the baptism of little Olaf. One day, when Olaf was ten years old, King Sigurd wanted to ride out, and, as there was nobody else about the house, he told his stepson Olaf to go and saddle his horse. Olaf did not refuse, but he went to the goats' pen, and put the king's saddle on the largest he-goat, led him up to the door, and went in and told King Sigurd that his horse was saddled. When King Sigurd came out and saw what Olaf had done, he said: "Easy it is to see that thou wilt little regard my orders; and thy mother will think it right that I do not order thee to do anything against thy own inclination. I see well enough that thou art far more proud than I am." Olaf answered little, but went his way laughing. When Olaf grew up he became of medium height, but very stout and strong. He had light brown hair, and a broad face which was white and red. He had particularly fine eyes, which were beautiful, but piercing, so that one was afraid to look him in the face when he was angry. Olaf was very expert in all bodily exercises, understood well how to handle his bow, and was especially an expert in throwing his spear. He was well liked by his friends and acquaintances, was ambitious in his sports, and always strove to be the first.