. Lacy, Norris J. (1991). The New Arthurian Encyclopedia. New York: Garland. . Vincent, Nicholas. (2004) Becket's Murderers. Canterbury: The Friends of Canterbury Cathedral. . Available at: http://www.canterbury-archaeology.org.uk/publications/4590809431. von Zatzikhoven, Ulrich; Kerth, Thomas (translator), Lanzelet, Columbia University Press, 2005. 12th-century births 1202 deaths 12th-century English people 13th-century English people 12th-century murderers Anglo-Normans Christians of the Third Crusade English assassins Norman warriors Medieval assassins Medieval English knights People from Westmorland People temporarily excommunicated by the Catholic Church Thomas Becket