| Sources |
- [S789] The Wallop Family and Their Ancestry by Vernon James Watney. Oxford, 1928.
- [S813] The Lacy Family in England and Normandy, 1066-1194 by W. E. Wightman. Oxford: The Clarendon Press, 1966.
- [S128] The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant ed. Vicary Gibbs, H. A. Doubleday, Duncan Warrand, Howard de Walden, Geoffrey H. White and R. S. Lea. 2nd edition. 14 volumes (1-13, but volume 12 spanned two books), London, The St. Catherine Press, 1910-1959. Volume 14, "Addenda & Corrigenda," ed. Peter W. Hammond, Gloucestershire, Sutton Publishing, 1998.
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