Olaf Haraldsson (d. 934) was son of Harald Fairhair of Norway. He was made king of Vingulmark by his father and then later inherited Vestfold after his brother Bjørn Farmann had been killed by their half-brother Eirik Bloodaxe. Eirik was king Harald's favourite son and his appointed successor, but he was not very popular among his half-brothers. Upon his father's death, Olaf made himself king of eastern Norway, and allied himself with another half-brother, Sigrød, against Eirik. The three kings met in battle outside Tønsberg. Olaf and Sigrød were defeated and they both fell there. Olaf's son, Tryggve Olavsson, later became king of Ranrike and Vingulmark. Events The Goryeo army defeats Hubaekje forces in present-day Hongseong County. ... Harald I (b. ... Vingulmark was the name of a Viking Age petty kingdom around Oslofjorden. ... Vestfold is a county in Norway, bordering Buskerud and Telemark. ... Eirik Bloodaxe (Old Norse:Eiríkr blóðöx, Icelandic:Eiríkur blóðöx, Norwegian:Eirik Blodøks) (cirka 885 – 954), was the second king of Norway (930-934) and the eldest son of his father Harald Fairhair. ... County Vestfold Landscape Viken Municipality NO-0704 Administrative centre Tønsberg Mayor (2004) Per Arne Olsen (FrP) Official language form Bokmål Area  - Total  - Land  - Percentage Ranked 381 107 km² 106 km² 0. ... Ranrike (Old Norse Ránríki) was the old name for a part of Viken, corresponding to the northern half of the traditional Swedish province of Bohuslän (roughly the physical Alfheim of Scandinavian mythology). ... Vingulmark was the name of a Viking Age petty kingdom around Oslofjorden. ...