Anund Jacob

Anund Jacob (c. 1008–c. 1050), son of Olof Skötkonung, was made co-ruler c. 1019 and sole king in 1022, taking the Norse name Anund in place of his baptismal name Jakob. Surnamed Kolbränna, the Coal-burner, for burning opponents' houses, he promoted Christianity with missionaries from Hamburg-Bremen and minted coin at Sigtuna.

To check Danish hegemony he backed Norway's Olaf II against Cnut the Great and fought at the sea battle of Helgeå in 1026. He died c. 1050, leaving the throne to his half-brother Emund the Old.