Edgar was the son of Malcolm III and Margaret, the sister of Edgar the Aethling. When Malcolm was killed at the Battle of Alnwick, in 1093, a power struggle resulted with Malcolm's brother Donald Bane becoming King of Scotland. Malcolm's family were exiled to England. In 1095, while assisting William Rufus in the North fighting the rebel Robert de Mowbray, William nominated Edgar the rightful King of Scotland. Edgar had to wait until 1097 when, with assistance from his uncle Edgar the Aetheling, he advanced into Scotland, forced out Donald Bane and took the Scottish throne. Edgar ruled Scotland from 1097 to 1107 as a vassal of the William Rufus, English king, and began to improve the links between the two countries. This included the marriage of his sister Matilda to Henry I in 1100. In 1098 a treaty with Magnus III gave away the northern territories of Scotland including the Hebrides to Norway. Edgar spent money on religious houses in Scotland including the foundation of an Abbey at Coldingham populated by monks from Durham and the reconstruction of Dunfermline Abbey. It was in this Abbey that Edgar was buried after his death on the 8th of January 1107. Edgar had no children and so his brother Alexander became King of the Scots.

 Edgar (King of Scotland 1097-1107) (b.1074? - d.1107)