» For the 10th century king see Harthacnut of Denmark. Harthacanute (Canute the Hardy, sometimes Hardicanute, Hardecanute, Hörthaknútr; Danish: Hardeknud) (1018 – June 8, 1042) was King of Denmark from 1035 to 1042 as well as King of England from 1040 to 1042. He was the only son of Canute the Great and Emma of Normandy. He succeeded to the throne of Denmark in 1035, reigning as Canute III, yet a war against Magnus I of Norway meant he couldn't secure his claim to the thron… (More on Harthacanute)