kingdom · Scandinavia and the Baltic

North Sea Empire

1016 CE – 1035 CE · capital Winchester

The short-lived union of England, Denmark and Norway under Cnut the Great, which made the North Sea the centre of an Anglo-Scandinavian realm.

Origins

Cnut, son of the Danish king Sweyn Forkbeard, conquered England in 1016 after the death of Edmund Ironside. He inherited Denmark from his brother Harald around 1018 and, after driving out Olaf Haraldsson, took Norway in 1028, also claiming lordship over part of the Swedes.

Rule and society

Cnut ruled mainly from England, often from Winchester, keeping English institutions, issuing law codes and marrying Emma of Normandy, widow of Æthelred the Unready. He governed Denmark and Norway through regents, including his son Harthacnut and the earls of Lade. A pilgrimage to Rome in 1027, where he attended Conrad II's coronation, raised his standing among Christian rulers.

Decline and legacy

Cnut died at Shaftesbury in 1035, and his realm broke apart. Norway rejected Danish rule under Magnus the Good, while his sons Harold Harefoot and Harthacnut divided England and Denmark. After Harthacnut's death in 1042 the English throne returned to Edward the Confessor, and the Kingdom of Denmark and the Kingdom of Norway went their own ways.

Connections (6)

More states of Scandinavia and the Baltic →

Cite this page
APA
The Epoch Institute. (2026). North Sea Empire. In The Epoch Institute States Register. https://the-epoch-institute.org/state/north-sea-empire
MLA
“North Sea Empire.” The Epoch Institute States Register, The Epoch Institute, 2026, https://the-epoch-institute.org/state/north-sea-empire. Accessed .
Chicago
The Epoch Institute. “North Sea Empire.” The Epoch Institute States Register. 2026. https://the-epoch-institute.org/state/north-sea-empire.
Harvard
The Epoch Institute (2026) ‘North Sea Empire’, The Epoch Institute States Register. Available at: https://the-epoch-institute.org/state/north-sea-empire (Accessed: ).

Last reviewed October 2026Random state ↻