What was the name of the father of the Norwegian king at the center of the Saga of Harald Fairhair?
Halfdan the Black Halfdan the Black (Old Norse: "Halfdanr Svarti") (  810 –  860 ) was a ninth-century king of Vestfold. He belonged to the House of Yngling and was the father of Harald Fairhair, the first king of Norway.
Eystein Glumra Eystein Glumra ("Øystein Glumra"), also called Eystein Ivarsson was a 9th-century petty king on the west coast of Norway. According to the Sagas, he was the father of both Rognvald Eysteinsson and Sigurd Eysteinsson.