^Detlev Schwennicke, Europäische Stammtafeln: Stammtafeln zur Geschichte der Europäischen Staaten, Neue Folge, Band II (Verlag von J. A. Stargardt, Marburg, Germany, 1984), Tafel 81
^C. Warren Hollister, Henry I (Yale University Press, New Haven & London, 2003), pp. 204-6
^C. Warren Hollister, Henry I (Yale University Press, New Haven & London, 2003), p. 206
^ abDavid Crouch, The Normans; The History of a Dynasty (Hambledon Continuum, New York, 2007), p. 185
^Kathleen Thompson, 'Robert of Bellême Reconsidered', Anglo-Norman Studies XIII; Proceedings of the Battle Conference 1990, Ed. Marjorie Chibnall (The Boydell Press, Woodbridge, 1991), p. 278
^ abDavid Crouch, The Normans; The History of a Dynasty (Hambledon Continuum, New York, 2007), p. 187
^ abcdSandy Burton Hicks, 'The Anglo-Papal Bargain of 1125: The Legatine Mission of John of Crema', Albion, Vol. 8, No. 4, (Winter, 1976), p. 302
^Edward Augustus Freeman, The History of the Norman Conquest of England, Its Causes and Its Results, Vol V (Oxford, at the Clarendon Press, 1876), p. 199
^ abcHenry I and the Anglo-Norman World; Studies in memory of C. Warren Hollister, Ed. Donald F. Fleming, Janet M. Pope (Boydell Press, UK, 2007), pp. 318-19