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
Edgar, King of Scotland uncle Donald III (Domnall Bán mac Donnchada). His older brother Edmund sided with Donald, presumably in return for an appanage and acknowledgement as the heir of the aged and son-less Donald. Edgar received limited support from William II (William Rufus) as Duncan had before him; however, the English king was occupied with a revolt led by Robert de Mowbray, Earl of Northumbria, who appears to have had the support of Donald and Edmund. Rufus campaigned in northern England for much of 1095, and during this time Edgar gained control only of Lothian. A charter issued at Durham at this time