are not always easy to trace. He spent much of his time outside his principality. He was, for instance, at St Albans on 28 December 1115, and was still in England in 1116 when he witnessed a charter of his sister Queen Matilda (Edith, or Maud) at Westminster Abbey. Despite the death of his sister on 1 May 1118, David remained a favoured vassal of King Henry. He was at Henry's court in the years 1121 and 1122. He was in the south of England in the summer of 1123, and it is possible that David accompanied Henry to Normandy in the same year to suppress William Clito's claim for the Duchy of Normandy. If David did go to France, then by the time he returned to Britain in 1124 his brother Alexander had died. Notes References Primary sources Anderson, Alan Orr (ed.), Early Sources of Scottish History: AD 500-1286, 2 Vols, (Edinburgh, 1922) Anderson, Alan Orr (ed.), Scottish Annals from English Chroniclers: AD 500-1286, (London, 1908), republished, Marjorie Anderson (ed.) (Stamford, 1991) Barrow, G. W. S. (ed.), The Charters of King David I: The Written acts of David I King of Scots, 1124-1153 and of His Son Henry Earl of Northumberland, 1139-1152, (Woodbridge, 1999) Clancy, Thomas Owen (ed.), The Triumph Tree: Scotland's Earliest Poetry, 550-1350, (Edinburgh, 1998) Donaldson, G. (ed.), Scottish Historical Documents, (Edinburgh, 1970) Lawrie, Sir Archibald (ed.), Early Scottish Charters Prior to A.D. 1153, (Glasgow, 1905) Skene, Felix J. H. (tr.) & Skene, William F. (ed.), John of Fordun's Chronicle of the Scottish Nation, (Edinburgh, 1872) Secondary sources Barrow, G. W. S., "Beginnings of Military Feudalism", in G. W. S. Barrow (ed.) The Kingdom of the Scots, (Edinburgh, 2003), pp. 250–78 Barrow, G. W. S., "King David I and Glasgow" in G.W.S. Barrow (ed.), The Kingdom of the Scots, (Edinburgh, 2003), pp. 203–13 Barrow, G. W. S., "David I (c.1085–1153)", in the Oxford Dictionary of National Biography, Oxford University Press, September 2004; online edn, January 2006 , accessed 11 Feb 2007 Barrow, G. W. S., "David I of Scotland: The Balance of New and Old", in G. W. S. Barrow (ed.), Scotland and Its Neighbours in the Middle Ages, (London, 1992), pp. 45–65, originally published as the 1984 Stenton Lecture, (Reading, 1985) Barrow, G. W. S., Kingship and Unity: Scotland, 1000-1306, (Edinburgh. 1981) Barrow, G. W. S., "The Kings of Scotland and Durham", in David Rollason, Margaret