"For lists of the prehistoric kings of Norway see List of legendary kings of Norway"  Besides becoming sole king after his father Harold's death, Eric Bloodaxe was king jointly with his father for three years before the latter's death. After Harald's death, Eric ruled as "overking" of his brothers, who also held status as kings and had control over certain regions. Harald Greycloak also ruled as "overking" of his brothers. All dates for the kings of the Fairhair dynasty are approximate and/or just scholarly estimates. Slight differences might therefore occur between different sources. The following table uses the dates given in "Norsk biografisk leksikon"/"Store norske leksikon". The Danish king Harald Bluetooth had himself hailed as king of Norway after the Battle of Fitjar ( 961). Besides gaining direct control of Viken in south-eastern Norway, he let Harald Greycloak rule the rest of Norway as king, nominally under himself. Harald Bluetooth later switched his support to Harald Greycloak's rival, Haakon Sigurdsson, Earl of Lade, who eventually captured Harald Greycloak's kingdom. Haakon thereafter ruled Norway (except Viken), at first nominally under Harald. All dates are estimates and subject to interpretation. Haakon is generally held as the ruler of Norway from 970 to 995. After the Battle of Svolder, the Danes recaptured Norway under Sweyn Forkbeard. As before, the Danes controlled the petty kingdoms of Viken as vassals, while the two Earls of Lade, Eric Haakonsson and Sweyn Haakonsson, ruled Western Norway and Trøndelag, nominally as earls under Sweyn. Eric is generally held as the de facto ruler of Norway from 1000 to 1015, together with his brother Sweyn, a lesser known figure, with whom he shared his power. In 1905, Carl of Denmark was elected King of Norway and took the name Haakon VII. With him the House of Oldenburg, in the form of its junior branch, resumed occupancy of the throne of Norway.