According to medieval historian, Snorii Sturluson, Olav's father, King Harald I (Haarfagre/Fairhair), bestowed the title of "King" to his sons and divided the land between them to rule.
He was also called "Olav of Viken" and "Olaf Geirstatha-Alf." The name of his wife is unknown.
-------------------------------------------------------------------------------------------------- Information copied from Wayne Iverson, World Connect db=wiversrm, rootsweb.com -------------------------------------------------------------------------------------------------- He took over Westfold in 930 after brother Bj¯rn was slain by brother Erik. He raised Guthroth Bj¯rnsson as a foster child. He had taken over Ranrike in about 900 after brother Guthorm was slain by Solvi Klofi. After his father, King Harald Fairhair, died in 933 and brother Erik "Bloodaxe" took over, he and bother Sigroth agreed to meet the next spring in Tonsberg. Erik summoned a great force and sailed to Tonsberg and killed both Olaf and Sigroth in a battle in the hills east of town.