Cnut Great (c990 - 1035). Cnut the Great, also known as Canute, whose father was Sweyn Forkbeard, was King of Denmark, England and Norway; together often referred to as the North Sea Empire.Yet after the deaths of his heirs within a decade of his own, and the Norman conquest of England in 1066, this legacy was lost. He is popularly invoked in the context of the legend of King Canute and the tide, which often misrepresents him as a deluded monarch believing he has supernatural powers, contrary to the original legend which portrays a wise king who rebuked his courtiers for their fawning behaviour. As a Danish prince, Cnut won the throne of England in 1016 in the wake of centuries of Viking activity in northwestern Europe. Scotland submitted to him in 1017. His later accession to the Danish throne in 1018 brought the crowns of England and Denmark together. Cnut sought to keep this power-base by uniting Danes and English under cultural bonds of wealth and custom, as well as through sheer brutality. After a decade of conflict with opponents in Scandinavia, Cnut claimed the crown of Norway in Trondheim in 1028. The Swedish city Sigtuna was held by Cnut. Dominion of England lent the Danes an important link to the maritime zone between the islands of Great Britain and Ireland, where Cnut, like his father before him, had a strong interest and wielded much influence among the Norse-Gaels. Cnut's possession of England's dioceses and the continental Diocese of Denmark, with a claim laid upon it by the Holy Roman Empire's Archdiocese of Hamburg-Bremen, was a source of great prestige and leverage within the Catholic Church and among the magnates of Christendom. After his 1026 victory against Norway and Sweden, and on his way back from Rome where he attended the coronation of the Holy Roman Emperor, Cnut, in a letter written for the benefit of his subjects, deemed himself King of all England and Denmark and the Norwegians and of some of the Swedes. The Anglo-Saxon kings used the title king of the English. Cnut was ealles Engla landes cyning, king of all England. Medieval historian Norman Cantor called him the most effective king in Anglo-Saxon history. Cnut was a son of the Danish prince Sweyn Forkbeard, who was the son and heir to King Harald Bluetooth and thus came from a line of Scandinavian rulers central to the unification of Denmark. Neither the place nor the date of his birth are known. Harthacnut I of Denmark was the semi-legendary founder of the Danish royal house at the beginning of the 10th century, and his son, Gorm the Old, became the first in the official line. Harald Bluetooth, Gorm's son and Cnut's grandfather, was the Danish king at the time of the Christianization of Denmark; he became the first Scandinavian king to accept Christianity. The Chronicon of Thietmar of Merseburg and the Encomium Emmae report Cnut's mother as having been a daughter of Mieszko I of Poland. Norse sources of the High Middle Ages, most prominently Heimskringla by Snorri Sturluson, also give a Polish princess as Cnut's mother, whom they call Gunhild and a daughter of Burislav, the king of Vindland.Since in the Norse sagas the king of Vindland is always Burislav, this is reconcilable with the assumption that her father was Mieszko. Adam of Bremen in Gesta Hammaburgensis ecclesiae pontificum is unique in equating Cnut's mother with the former queen of Sweden, wife of Eric the Victorious and by this marriage mother of Olof Sketkonung.To complicate the matter, Heimskringla and other sagas also have Sweyn marrying Eric's widow, but she is distinctly another person in these texts, named Sigrid the Haughty, whom Sweyn only marries after Gunhild, the Slavic princess who bore Cnut, has died.Different theories regarding the number and ancestry of Sweyn's wives have been advanced. But since Adam is the only source to equate the identity of Cnut's and Olof Sketkonung's mother, this is often seen as an error on Adam's part, and it is often assumed that Sweyn had two wives, the first being Cnut's mother, and the second being the former Queen of Sweden. Cnut's brother Harald was the youngest of the two brothers according to Encomium Emmae. Some hint of Cnut's childhood can be found in the Flateyjarbek, a 13th-century source that says he was taught his soldiery by the chieftain Thorkell the Tall, brother to Sigurd, Jarl of mythical Jomsborg, and the legendary Joms, at their Viking stronghold on the island of Wollin, off the coast of Pomerania. His date of birth, like his mother's name, is unknown. Contemporary works such as the Chronicon and the Encomium Emmae, do not mention this.