Sir Peter de Gavaston, Knt., Earl of Cornwall

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Sir Peter de Gavaston, Knt., Earl of Cornwall, whose ancestry is unknown (or not traced here), was beheaded 19 June 1312.1

Peter married Margaret de Clare, daughter of Sir Gilbert de Clare, Knt., 6th Earl of Gloucester and Joan of England, say 1310.1

For more information about Sir Peter de Gavaston, Knt., Earl of Cornwall, please see this Wikipedia article.


Margaret de Clare b. abt. 1292, d. 9 Apr 1342
  • Joan de Gavaston2
This person was last edited on6 Jul 2019


  1. [S1947] Douglas Richardson, Royal Ancestry: A Study in Colonial and Medieval Families, Five vols. (Salt Lake City, Utah: s.p., 2013), 5:79 (Stratton Audley 10), further cited as Richardson, Royal Ancestry.
  2. [S2054] George Edward Cokayne, The Complete Peerage: Or a History of the House of Lords and All Its Members From the Earliest Times: Revised and Much Enlarged, 13 in 14 vols. (London, England: The St. Catherine Press, 1910-1940), 3:434 (Cornwall), further cited as CP.