 Also in 1006, the eleventh-century "De obsessione Dunelmi" records that the Scots penetrated into Northumbria, and besieged Durham before being beaten back by Uhtred, son of the northern English magnate Waltheof.The fact that there is no record of Cumbrian involvement in this Scottish enterprise could indicate that the devastation wrought by the English in 1000 had nullified Cumbrian military might.Another possibility is that the Cumbrians had adhered to the conditions of some sort of submission which Æthelræd had exacted from them as a result of his campaign.