 In 1016 he suffered several defeats against Cnut and in October they agreed to share the kingdom, but Edmund died within six weeks and Cnut became king of all England.Æthelred gave three of his daughters in marriage to ealdormen, presumably in order to secure the loyalties of his nobles and so to consolidate a defence system against Viking attacks.Unlike her mother-in-law, Ælfthryth, Ælfgifu was not anointed queen and never signed charters.