- [S452] #21 The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct, or Dormant (1910), Cokayne, George Edward (main author) and Vicary Gibbs (added author), (New edition. 13 volumes in 14. London: St. Catherine Press,1910-), vol. 3 p. 515.
- [S394] #230 [5th edition, 1999] The Magna Charta Sureties, 1215 (5th edition, 1999), Adams, Arthur, (5th edition. Baltimore: Genealogical Publishing, 1999), FHL book 973 D2aa 1999., p. 52 line 41B:11, p. 62 line 43C:11.