This Day in History: 1139-04-09
On 9th April 1139, the Treaty of Durham (Peace of Carlisle) was concluded between King Stephen of England and David I of Scotland. David and his son Henry were handed Carlisle, Cumberland, Westmorland and Lancashire north of the Ribble except the castles of Bamburgh and Newcastle with Henry made Earl of Northumberland. This treaty, agreed by Stephen to avoid fighting on two fronts against Empress Matilda’s invasion, unfortunately could not avert the impending civil war later to be called The Anarchy. As part of ‘the deal’, Prince Henry of Scotland was given the hand in marriage of Ada, daughter of William de Warenne, 2nd Earl of Surrey and lord of Sandal Castle. Their issue included two kings of Scotland: Malcolm IV and William I (The Lion).