He was the last male member of the house of Cerdic. After the death of King Harold at the battle of Hastings in 1066, Edgar was chosen king, but he submitted to William I in the same year. In 1068 he fled to the Scottish king Malcolm III, who soon married EdgarÕs sister St. Margaret of Scotland. Edgar took part in the unsuccessful Northumbrian uprising in 1069, in which the Danes also joined. After Malcolm made his peace with William in 1072, the Atheling probably lived in Flanders until he himself came to terms with William in 1074 and settled in France. He led a Norman force against Apulia in southern Italy for William in 1086. When the reign of William II began, the new king deprived Edgar of his lands, which led to war with Malcom III. Edgar joined Malcolm in raiding England in 1091, but after that he seems to have been at peace with William II of England. He led the English expedition that in 1097 dethroned Donald III and seated the AthelingÕs nephew Edgar on the throne of Scotland. The Atheling went on the crusade of 1099 with Robert II, duke of Normandy, and later fought for Robert against Henry I of England. He was taken prisoner at the battle of Tinchebrai in 1106, but was released. The date of his death is not known.