Amongst the refugees were Edgar Atheling and his sisters, grand-children of Edmund Ironside. Malcolm married Margaret, the eldest sister; she was a noble woman, learned, pious, and charitable, doted upon by her husband, and ever influencing his fierce nature for good. Thus connected by birth with the heir of the old race of English Kings, Malcolm invaded Northumberland on behalf of Edgar; but William was too strong for him, and in turn invaded Scotland. William marched as far north as Abernethy, where he forced Malcolm to do him homage. William never really subjugated Northumbria north of the Tyne, but built Newcastle as a border fortress. After the death of William in 1087, Malcolm made other invasions of Northumbria, and to consolidate the possession of Lothian, he removed the seat of government to Edinburgh. In 1093, he made a desperate attempt to gain the counties of Northumberland and Cumberland; but, whilst besieging the border fortress of Alnwick, he was attacked, defeated, and killed by a Norman army. The marriage of Henry, the youngest son of the Conqueror, with Matilda, daughter of Malcolm, and niece of Edgar Atheling, united the Norman and the older English royal lines. Henry’s son William was, in 1120, drowned in “The White Ship,” and his only other child, Maud, was thus the rightful heir to the throne. But the proud Norman barons had not been used to female rule; so, after Henry’s death, in 1135, Stephen, a son of the Conqueror’s daughter Adela, was made King. David I., youngest son of Malcolm Canmore, succeeding his two elder brothers, was at this time King of Scotland, and he took up the cause of his niece Maud. In 1138 he invaded Northumberland, penetrating into Yorkshire. At Northallerton he was met and defeated in a battle called “Of the Standard.” It is said that he was gaining the day, when an English soldier cut off the head of one of the slain, placed it on a spear, and called out that it was the head of the King of Scots, thus causing a panic in the Scottish army which the King, riding amongst it without his helmet, vainly tried to overcome. After peace, David was allowed to retain Northumberland and Durham, excepting the fortresses of Newcastle and Bamborough. He was so good a king that after his death, in 1153, he was canonised.