Writing in the early 17th century
William Pole stated that there were an additional four feudal baronies: Dartington,[10] Harberton,[11] Bishop of Exeter,[12] Abbot of Tavistock[13]
Sanders, I.J. English Baronies: A Study of their Origin and Descent 1086-1327, Oxford, 1960
Pole, Sir William (d.1635), Collections Towards a Description of the County of Devon, Sir John-William de la Pole (ed.), London, 1791, Book I, pp.1-33
Risdon, Tristram (d.1640), Survey of Devon, 1811 edition, London, 1811, with 1810 Additions, pp.361-4, The Baronies of this County and how many Knight's Fees were held of the Honours, with the Ensigns of their Ancient Owners