to be evidenced by a later grant of his succeeding grandson, Malcolm IV, King of Scotland, which mentions unspecified Gall Gaidhel lands held by David during Alexander's reign.<ref>Oram, RD (2000) p. 63; [[#L4|Liber S. Marie de Calchou' (1846)]] pp. III–VII; Diplomatarium Norvegicum (n.d.) vol. 19 § 38; Document 1/5/24 (n.d.).</ref>|group=note}} In 1120, Henry I's only legitimate son died along with Richard d'Avranches, Earl of Chester in the White Ship disaster. The latter's lordship in the Welsh March was a critical region of Henry I's realm, and the English king responded by transplanting Ranulf le Meschin from his lordship of Carlisle to Richard d'Avranches' former lordship along the Welsh frontier. Upon Alexander's death in 1124, David succeeded to the throne. The latter's subsequent endowment of Annandale to Robert de Brus appears to have not only signalled the Scottish Crown's intention of consolidating control of the region, but served as a declaration of the kingdom's claims to Cumbria. Fergus's marriage to Henry I's daughter, which appears to date to about this period, may have been arranged with such developments in mind. If so, the union could have been orchestrated as a means to not only compensate for Ranulf's removal, but to counter the dramatic rise of David and the resultant imbalance of power his ascent created. With Ranulf thus vacated from the north, Henry I had filled the power vacuum with various so-called "new men". One such incomer may have been Robert de Brus, a Norman who had previously received extensive lands from the English Crown. In fact, it is possible that it was in the wake of Ranulf's removal that Robert de Brus originally received the lordship of Annandale. If so, the latter may have been inserted into the region by Henry I, or perhaps through collaborative effort between Henry I and his then-vassal David as a means of securing the Anglo-Scottish border. The apparent rise of Fergus at about this time may have also played a part in the infeftment of Annandale. Henry I himself was married to David's older sister, Edith, a union which closely bound him to the Scottish royal house. For as long as Henry I lived, relations between him and David remained harmonious. When the former died in 1135, however, the peace between the neighbouring realms was shattered when his nephew, Stephen of Blois, Count of Boulogne and Mortain, successfully seized the throne. Before the end