History of Hertfordshire of the Norse in England, including women and children. One of those executed was Gunhilde, the sister of King Sweyn Forkbeard of Denmark. He invaded England next year in retaliation. Forkbeard's assault on England lasted ten years, until 1013, when Æthelred fled to the continent. Forkbeard was crowned King of England on Christmas Day, but only reigned for five weeks before dying. Æthelred returned briefly and unsuccessfully until 1016, at which time he was succeeded by Forkbeard's son Knut, who granted the Royal Manor of Hitchin to his second in command, Earl Tovi. After the Norman Invasion, Edgar the Ætheling
Edward the Martyr the kingdom, ealdormen Ælfhere and Æthelwine, quarrelled, and civil war almost broke out. In the so-called anti-monastic reaction, the nobles took advantage of Edward's weakness to dispossess the Benedictine reformed monasteries of lands and other properties that King Edgar had granted to them. Edward's short reign was brought to an end by his murder at Corfe Castle in 978 in circumstances that are not altogether clear. His body was reburied with great ceremony at Shaftesbury Abbey early in 979. In 1001 Edward's remains were moved to a more prominent place in the abbey, probably with the blessing of his half-brother