^Sanders, I.J. English Baronies: A Study of their Origin and Descent 1086-1327, Oxford, 1960, p.51, note 2
^Based on the different armorials borne by each family, per: Sanders, I.J. English Baronies: A Study of their Origin and Descent 1086-1327, Oxford, 1960, p.51, note 2
Burke, Bernard. A Genealogical History of the Dormant, Abeyant, Forfeited and Extinct Peerages of the British Empire. London: Harrison, 1866.(p. 33) googlebooks Retrieved 22 February 2009