"Willelmus Worcestre, alius dictus Botoner, de Castre juxta Yermouth in com. Norff., gentilman": ipse de se die 28 Augusti 1460 scribens. Gairdner (1904)p. 338
Thomas Hearne, ed., Liber niger scaccarii (2a ed.) vol. 2 p. 424 sqq.; "Wilhelmi Wyrecester Annales rerum Anglicarum" in Joseph Stevenson, ed., Letters and Papers illustrative of the Wars of the English in France during the Reign of Henry VI vol. 2 fasc. 2 (Londinii, 1864) pp. [743]-[793]
