Sermo Lupi ad Anglos as the king's chief legal draftsman on into the reign of the Danish king Cnut the Great. It is both remarkable and puzzling that Wulfstan was able to play so central a role in politics under both Æthelred's and Cnut's reigns, especially as it was under Æthelred's reign that Wulfstan, in his "Sermo Lupi", so vehemently decried the depredations of the Danish and Norwegian Vikings. King Æthelred II — nicknamed Æthelred 'The Unready' - ruled England from 978-1016. For virtually his entire reign, England was the object of successive Viking raids. Between the period of 980-1016, few areas of southern
Cnut the Great fell into a period of disorder with a power struggle between the pretender to the throne Sweyn Estridsson, son of Ulf, and the Norwegian king, until the death of Magnus in 1047. The inheritance of England was briefly to return to its Anglo-Saxon lineage. The house of Wessex reigned again as Edward the Confessor was brought out of exile in Normandy and made a treaty with Harthacnut, his half-brother. As in his treaty with Magnus, it was decreed that the throne would go to Edward if Harthacnut died with no legitimate male heir. In 1042, Harthacnut died, and Edward was