"History of St Catherine's Castle", England Heritage, retrieved 26 May 2015; Leland 1907, pp. 202–203; Chandler 1996, p. 43 Leland, John (1907). Smith, Lucy Toumlin (ed.). The Itinerary of John Leland in or About the Years 1535–1543. Vol. 1. London, UK: George Bell and Sons. OCLC2858987. Chandler, John (1996). "John Leland in the West Country". In Brayshay, Mark (ed.). Topographical Writers in South-West England. Exeter, UK: University of Exeter Press. pp. 34–49. ISBN9780859894241.
"History of St Catherine's Castle", England Heritage, retrieved 26 May 2015; Leland 1907, pp. 202–203; Chandler 1996, p. 43 Leland, John (1907). Smith, Lucy Toumlin (ed.). The Itinerary of John Leland in or About the Years 1535–1543. Vol. 1. London, UK: George Bell and Sons. OCLC2858987. Chandler, John (1996). "John Leland in the West Country". In Brayshay, Mark (ed.). Topographical Writers in South-West England. Exeter, UK: University of Exeter Press. pp. 34–49. ISBN9780859894241.
Grose 1787, p. 15 Grose, Francis (1787). Supplement to the Antiquities of England and Wales. Vol. 8. London, UK: S. Hooper. OCLC861232358.
Grose 1787, p. 16 Grose, Francis (1787). Supplement to the Antiquities of England and Wales. Vol. 8. London, UK: S. Hooper. OCLC861232358.
