1 The Medieval March of Wales: The Creation and Perception of a Frontier, 10661283, Max Lieberman, Cambridge University Press, 2010, p. 86, ftnt 199, citing Eyton, vii. 21; ix, 167. Emma Pantulf is shown as the wife of Robert Corbet (d. 1222) and mother of Thomas Corbet of Caus in Authority and Resistance in the Age of Magna Carta: Proceedings of the Aberystwyth and Lampeter Conference, 2013, p. 70, citing Janet Meisel, Barons of the Welsh Frontier: The Corbet, Pantulf and Fitz Warin Families, 1066-1272, 1980, p. 5.