St. Olaf of Norway - Saints & Angels - Catholic Online
King of Norway and a martyr, also called Olaf Haraldsson. The son of King Harald Grenske of Norway, he spent most of his youth as a Norse raider until 1010 when he was baptized at Rouen. In 1013, he journeyed to England and offered his services to King Ethelred against the invading Danes. Returning ...
Source: catholic.org