They fought several battles against King Haakon including the Battle of Rastarkalv near the island of Frei in 955 and the Battle of Fitjar in 961.
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After King Haakon's death at Fitjar, Harald and his brothers became kings of Norway, but they had little authority outside Western Norway.
Harald V of Norway | Harald Eia | Harald Hudak | Harald Bohr | Harald Schumacher | Harald Meier | Harald I | Harald Kloser | Harald Bluetooth | Harald Zwart | Harald Stormoen | Harald Penrose | Harald Moltke | Harald Helfgott | Harald Berg | Heinz-Harald Frentzen | Harald Welte | Harald Vogel | Harald Victor Hove | Harald Szeemann | Harald Schmid | Harald Prokop | Harald Nielsen | Harald Motzki | Harald Martenstein | Harald Hennum | Harald Haarmann | Harald Edelstam | Harald | Harald Tusberg |
In autumn 962, Sigurd Håkonsson and his party were burnt to death by Harald Greycloak, while staying the night at a party at Aglo, in modern day Skatval in the municipality of Stjørdal.