Colin A. Gresham, Eifionydd : a study in landownership from the medieval period to the present day, University of Wales Press, , 530 p. (ISBN9780708304358, lire en ligne), p. 81
Burke's Genealogical and Heraldic History of the Landed Gentry, H. Colburn, , 1651 p. (lire en ligne)
Margaret Dunn et Richard Suggett, Darganfod Tai Hanesyddol Eryri : Discovering the Historic Houses of Snowdonia, RCAHMW, , 68 p. (ISBN978-1-871184-54-9, lire en ligne)
Caernarvonshire Historical Society, Transactions : Trafodion, (lire en ligne), p. 48
Brendan Bradshaw et John Stephen Morrill, The British Problem c-1534-1707 : State Formation in the Atlantic Archipelago, Macmillan International Higher Education, , 140 p. (ISBN978-1-349-24731-8, lire en ligne)
Felicity Heal, The Gentry in England and Wales, 1500-1700, Macmillan International Higher Education, , 65–66 p. (ISBN978-1-349-23640-4, lire en ligne)