Tironensian Order, and presumably committed to the new Gregorian ideas regarding episcopal organization. David carried out an inquest, afterwards assigned to the bishopric all the lands of his principality, except those in the east of his principality which were already governed by the Scotland-proper based bishop of St Andrews. David was responsible for assigning to Glasgow enough lands directly to make the bishopric self-sufficient and for ensuring that in the longer term Glasgow would become the second most important bishopric in the Kingdom of Scotland. By the 1120s, work also began on building a proper cathedral for the diocese. David would also try to ensure that his reinvigorated episcopal see would retain independence from other bishoprics, an aspiration which would generate a great deal of tension with the English church, where both the Archbishop of Canterbury and the Archbishop of York claimed overlordship. Activities in England The year 1113 was an important in another respect. In the later part of the year, King Henry gave David the hand of Matilda de Senlis, daughter of Waltheof, earl of Northumberland. The marriage brought with it the "Honour of Huntingdon and Northampton", a lordship which was scattered in the shires of Northampton, Huntingdon and Bedford. Moreover, within a few years Matilda de Senlis bore to him a son, whom David named Henry after his patron, King Henry I. Judith Green believes that Henry I's generosity had two causes; firstly, his wife — David's sister Matilda — was pressuring her husband to bestow favour on her younger brother; secondly, Henry wished to secure support for his succession plans. David would naturally be expected to support Henry's heirs as they would be David's own kin, and so boosting David's power was very much in Henry's interest. The new territories David gained control of were very much a boost, a valuable supplement to his income and manpower, increasing his status as one of the most powerful magnates in the Kingdom of the English. Moreover, Matilda's father Waltheof had been Earl of Northumberland, a defunct lordship which had covered the far north of England and included Cumberland and Westmorland, Northumberland-proper, as well as overlordship of the bishopric of Durham. David would later revive the claim to this earldom for his son Henry, but that was in the future, only after the death of King Henry. Like his activities before 1113, David's activities and personal whereabouts after 1114