Sweyn Forkbeard all England in 1016, following the deaths of Æthelred and his son Edmund Ironside; he succeeded his brother as King of Denmark in 1019 and eventually also ruled Norway, parts of Sweden, Pomerania, and Schleswig. Cnut and his sons, Harold Harefoot and Harthacnut, ruled England over a combined 26-year period (1016–1042). After Harthacnut's death, the English throne reverted to the House of Wessex under Æthelred's younger son Edward the Confessor (reigned 1042–1066). Sweyn's daughter, Estrid Svendsdatter, was the mother of King Sweyn II of Denmark. Her descendants continue to reign in Denmark to this day. One of them, Margaret of
Edgar Ætheling His mother was Agatha, who was described as a relative of the German Emperor, but whose exact identity is unknown. He was his parents' only son but had two sisters, Margaret and Cristina. In 1057, the childless king of England, Edmund Ironside's half-brother Edward the Confessor, who had only recently become aware that his nephew was still alive, summoned Edward back to England with his family to take up his place at court as heir to the throne. The returning exile died in uncertain circumstances shortly after his arrival in England. Edgar, at only six years old, was left as