it cannot be demonstrated that he possessed his inheritance until his foundation of Selkirk Abbey late in the year 1113. David's exact whereabouts between May 1108 and December 1113 are not explicitly attested in any sources, but according to the arguments of Richard Oram, all of this time was spent both in England and in Normandy. By the end of his time in the Kingdom of the English David had acquired lands in Yorkshire and in Normandy, receiving Hallamshire and the northern section of the Cotentin Peninsula from King Henry. David was probably in Henry's company when the latter campaigned in Normandy during this period, and David was probably given these lands as a reward for his services as a trusted subordinate. It was from Normandy and his possessions in the Cotentin Peninsula that David drew most of his early core followers, men such as Robert de Brus, Hugh de Morville and Ranulf de Soules, who became his chief magnates in the conquered territory between Cumberland and the Kingdom of Scotland; from here he probably brought his confessor John, the man who became the first bishop of David's reorganised diocese of Glasgow. According to Oram, it was only in 1113, when Henry had returned to England, that David was at last in a position to claim his inheritance in southern "Scotland". Seizure of inheritance There is no evidence which shows that King Henry himself participated in the campaign in person, but it is clear that his backing was enough to force King Alexander to recognize his younger brother's claims. This probably occurred without bloodshed. Years later, when David invaded England with a huge army composed almost entirely of Gaelic Scots, Ailred of Rievaulx has a Norman knight named Robert de Brus lament and complain to David about his betrayal of the Angli and Normanni, the English and Normans, whom he once relied upon. Among other things, the knight asserted:"Oh King, when thou didst demand from thy brother Alexander the part of the kingdom which the same brother [Edgar] had bequeathed at his death didst obtain without bloodshed all that thou wouldst, through fear of us" It was in this way, through a bloodless threat of force, that David gained his first territorial foothold within the area of modern Scotland. David's aggression seems to have inspired resentment amongst some native Scots. A recently rediscovered Gaelic quatrain from this period complains that: