With him came a cadet of the great Anglo-Breton House of FitzAlan, who obtained the hereditary office of Seneschal or _Steward_ of Scotland.

His patronymic, FitzAlan, merged in Stewart (later Stuart), and the family cognizance, the _fesse chequy_ in azure and argent, represents the Board of Exchequer.

The earliest Stewart holdings of land were mainly in Renfrewshire; those of the Bruces were in Annandale.

These two Anglo-Norman houses between them were to found the Stewart dynasty.
The wife of David, Matilda, widow of Simon de St Liz, was heiress of Waltheof, sometime the Conqueror's Earl in Northumberland; and to gain, through that connection, Northumberland for himself was the chief aim of David's foreign policy,--an aim fertile in contentions.
We have not space to disentangle the intricacies of David's first great domestic struggles; briefly, there was eternal dispeace caused by the Celts, headed by claimants to the throne, the MacHeths, representing the rights of Lulach, the ward of Macbeth.

{20} In 1130 the Celts were defeated, and their leader, Angus, Earl of Moray, fell in fight near the North Esk in Forfarshire.