M. J. Trow: Cnut
From the Publisher
Already king of Denmark by 1014, Cnut was one of three claimants for the English throne and on the face of it, the least likely to succeed. The others were the occupant, Ethelred and Edmund - known as Ironside - Ethelred's eldest son. Two years of in-fighting among the three combatants followed, with the timely and suspicious deaths of both his rivals ensuring Cnut was the undisputed first Danish king of England.
Cnut had achieved power but he had yet to win the hearts and minds of Englishmen so he married their queen, Emma, widow of Ethelred and perhaps 20 years older than him. By this, Cnut assured an Anglo-Danish succession, burying the hatchet after a century of war and violence.
Safe in the knowledge that England was loyal, Cnut embarked on an ambitious, bloody and successful foreign policy. When he died he was the most powerful king in Europe except the Holy Roman Emperor and England was a united nation.
M. J. Trow: Cnut. Emperor of the North. Sutton Publishing, ISBN: 0750933879 (January, 2005), 288 p., £20.00