Monarchy of Norway
They merged into larger kingdoms by the different kings (chiefs); Harald Gullskjegg, Gandalv Alvgerisson, Kjøte den rike. Vigbrand fra Agder, Vikar Haraldsson, Øystein Halvdansson in addition to Halvdan Svarte. Harald Fairhair (Harald den Hårfagre) the son of Halfdan the Black (Halvdan Svarte) unified Norway once and for all into one kingdom at the battle of Hafrsfjord. Where he fought against the five remaining Kings in the west of the country (Vestlandet).