Harold I (Harefoot)
Born c. 1016, acknowledged (though disputed) son of Canute. Though his half-brother Harthacnut was heir to his father's thrones of England and Denmark, Harold Harefoot took power in England, initially as regent for his brother, occupied, from 1037 as King. Possibly married to a woman called Ælfgifu, with a son, Ælfwine. Died 1040.
- Etymological note: Harefoot, glossed as 'fast of foot' in the 12th century, was earlier recorded as harefoh or harefah, whose meaning cannot be elucidated here.
Harold II (Godwineson)
Born probably in 1022 or 1023, the second son of Earl Godwine. Succeeded Edward 'the Confessor', to whom his sister Edith was married, in 1066, "the year of the three kings": the succession was disputed by William Duke of Normandy, who invaded and killed Harold in the victory at Hastings. Harold Godwineson was 'handfast', or 'married in the Danish style', to Edith Swanneck]] (Ealdgȳð Swann hnesce), with whom he had at least six children; and more formally in 1066 to Edith or Ealdgyth [Aldgyth], daughter of Ælfgar, earl of Mercia (d. 1062?), and Ælfgifu, and widow of Gruffudd ap Llywelyn (d. 1063), king of all Wales after 1055.
- There have also been five King Haralds of Norway (the medieval Harald I (858-928), 'Fairhair'; Harald II (959-974), 'Graycloak'); Harald III (1045-1066), 'Hardrada' (killed at the battle of Stamford Bridge); Harald IV (1130-1136) 'Gille'; and the current (2017) king, Harald V); and three of Denmark (Harald I (940-986), 'Bluetooth'; Harald II (1014-1018); and Harald III (1074-1080).