His son Henry, by peaceful arrangement, received the Earldom of Northumberland, without the two strong places, Bamborough and Newcastle.
Through the anarchic weakness of Stephen's reign, Scotland advanced in strength and civilisation despite a Celtic rising headed by a strange pretender to the rights of the MacHeths, a "brother Wimund"; but all went with the death of David's son, Prince Henry, in 1152.

Of the prince's three sons, the eldest, Malcolm, was but ten years old; next came his brothers William ("the Lion") and little David, Earl of Huntingdon.

From this David's daughters descended the chief claimants to the Scottish throne in 1292--namely, Balliol, Bruce, and Comyn: the last also was descended, in the female line, from King Donald Ban, son of Malcolm Canmore.
David had done all that man might do to settle the crown on his grandson Malcolm; his success meant that standing curse of Scotland, "Woe to the kingdom whose king is a child,"-- when, in a year, David died at Carlisle (May 24, 1153).
SCOTLAND BECOMES FEUDAL.
The result of the domestic policy of David was to bring all accessible territory under the social and political system of western Europe, "the Feudal System." Its principles had been perfectly familiar to Celtic Scotland, but had rested on a body of traditional customs (as in Homeric Greece), rather than on written laws and charters signed and sealed.
Among the Celts the local tribe had been, theoretically, the sole source of property in land.

In proportion as they were near of kin to the recognised tribal chief, families held lands by a tenure of three generations; but if they managed to acquire abundance of oxen, which they let out to poorer men for rents in kind and labour, they were apt to turn the lands which they held only temporarily, "in possession," into real permanent _property_.

The poorer tribesmen paid rent in labour or "services," also in supplies of food and manure.
The Celtic tenants also paid military service to their superiors.