The early twelfth century saw the rise of Alexander's younger brother, David. The latter's close connections with the English likely contributed to his eventual acquisition of a substantial part of southern Scotland from Alexander. In about 1113, David married Maud de Senlis, a wealthy English widow, and through her came into possession of extensive lordship that came to be known as the Honour of Huntingdon. As the mid-part of the century approached, the balance of power along the northern part of the Anglo-Norman realm began to shift in favour of David. 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.