^Glover's Roll, part 1, B27, William de Canteloupe
^Chronica Maiora - Royal MS 14 C VII, (The Historia Anglorum, or "History of the English", by Matthew Paris (d. 1259), a history of England covering the years 1070-1253. Begun in 1250 and perhaps completed around 1255) arms of William III de Cantilupe, folio 165v [1]
^Sanders, I.J. English Baronies: A Study of their Origin and Descent 1086-1327, Oxford, 1960, p. 40
^Sanders, I.J. English Baronies: A Study of their Origin and Descent 1086-1327, Oxford, 1960, p. 90