Gudrød Bjørnsson
Gudrød Bjørnsson was, in late tradition, the son of Bjørn Farmann, the king of Vestfold, and a grandson of Harald Fairhair. Gudrød is made father of Harald Grenske, and the paternal grandfather of Saint Olaf.
After Gudrød's father had been killed by Eric Bloodaxe, he lived with his uncle Olaf Haraldsson Geirstadalf, the king of Vingulmark. Olaf rebelled against Bloodaxe, but was killed in battle, and so Gudrød had to escape to Oppland.
When Haakon the Good had become king, Gudrød was given Vestfold, his father's kingdom, as a fief.
Gudrød was slain in the vicinity of Tønsberg, by Harald Greyhide, who feared a rebellion from his subordinate kings.