KING DAVID I (c1085-1153) played a vital role in the development of the Scottish state, and in the organisation of Christianity therein.
David was the son of King Malcolm III (who deposed Macbeth) and St Margaret, the grand-daughter of the English king Edmund Ironside. In 1100 his sister married Henry I of England, at whose court, according to William of Mal mesbury, David "rubbed off all the tarnish of Scottish barbarism".
In 1107 he succeeded one brother as Prince of Cumbria (south-west Scotland as well as Cumberland), and in 1124 followed another brother as King of Scotland. After the death of Henry I in 1135 he fought savagely both to establish his niece Matilda on the English throne and to secure his wife's claim to Northumbria.
Repulsed, David concentrated after 1141 on introducing Norman feudalism into Scotland in order to eliminate old English influence. At the same time he extinguished the last vestiges of Celtic Christianity and brought the Church in Scotland more directly under Roman influence. His reforms included the reorganisation of ancient sees and the creation of new ones at Caithness, Moray and Ross. David's many monastic foundations included houses at Kelso, Melrose, Jedburgh, Holyrood and Glasgow.