918 Æthelflæd died and Edward took over direct control of Mercia, extinguishing what remained of its independence and ensuring that henceforth there would be only one Kingdom of the English. In 927 Edward's successor Æthelstan conquered Northumbria, bringing the whole of England under one ruler for the first time. The Kingdom of Wessex had thus been transformed into the Kingdom of England. Although Wessex had now effectively been subsumed into the larger kingdom which its expansion had created, like the other former kingdoms, it continued for a time to have a distinct identity which periodically found renewed political expression. After the death of King Eadred in 955, who had no legitimate heirs, the rule of England passed to his nephew, Eadwig. Eadwig's unpopularity with the nobility and the church led the thanes of Mercia and Northumbria to declare their allegiance to his younger brother, Edgar, in October 957, though Eadwig continued to rule in Wessex. In 959, Eadwig died and the whole of England came under Edgar's control. After the conquest of England by the Danish king Cnut in 1016, he established earldoms based on the former kingdoms of Northumbria, Mercia and East Anglia, but initially administered Wessex personally. Within a few years, however, he had created an earldom of Wessex, encompassing all of England south of the Thames, for his English henchman Godwin. For almost fifty years the vastly wealthy holders of this earldom, first Godwin and then his son Harold, were the most powerful men in English politics after the king. Finally, on the death of Edward the Confessor in 1066, Harold became king, reuniting the earldom of Wessex with the crown. No new earl was appointed before the ensuing Norman Conquest of England, and as the Norman kings soon did away with the great earldoms of the late Anglo-Saxon period, 1066 marks the extinction of Wessex as a political unit. Symbols Wyvern or dragon Wessex is often symbolised by a wyvern or dragon. Both Henry of Huntingdon and Matthew of Westminster talk of a golden dragon being raised at the Battle of Burford in 752 by the West Saxons. The Bayeux Tapestry depicts a fallen golden dragon, as well as a red/golden/white dragon at the death of King Harold II, who was previously Earl of Wessex. Dragon standards were in fairly wide use in Europe at the time, being derived from the draco standard employed by the