The Complete Peerage of England, Scotland, Ireland, Great Britain, and the United Kingdom. 1887–98 (8 vols); 1910–59 (13 vols). 6 vols. Gloucester: Alan Sutton, 1982.
Robinson, W.R.B. 'Knighted Welsh Landowners, 1485–1558: A Provisional List.' Welsh History Review 13 (1987): 282–98.