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
Stigand would not have a son from his marriage, and he and his advisors began to search for an heir. Edward the Atheling, the son of King Edmund Ironside (reigned 1016), had been exiled from England in 1017, after his father's death. Although Ealdred, the Bishop of Worcester, went to the Continent in search of Edward the Exile, Ian Walker, the biographer of King Harold Godwinson, feels that Stigand was behind the effort. In the end, although Edward did return to England, he died soon after his return, leaving a young son Edgar the Ætheling. King Edward, on his deathbed, left