Sources |
- [S336463] Medieval Lands: A prosopography of medieval European noble and royal families, Charles Cawley, (Online: The Foundation for Medieval Genealogy at http://fmg.ac/Projects/MedLands/, 20XX), http://fmg.ac/Projects/MedLands/ENGLAND,%20Kings%201066-1603.htm#Margaretdied1318Or1333.
- [S336429] Britain's Royal Families: A Complete Genealogy, Alison Weir, (London: Vintage Books, 2008), 133.
- [S157] A Great and Terrible King: Edward I and the Forging of Britain, Marc Morris, (New York: Pegasus Books, 2015), 174.
Year only.
- [S336429] Britain's Royal Families: A Complete Genealogy, Alison Weir, (London: Vintage Books, 2008), 133.
Cawley places it after 11 Mar 1333.
- [S157] A Great and Terrible King: Edward I and the Forging of Britain, Marc Morris, (New York: Pegasus Books, 2015), 18-20.
- [S157] A Great and Terrible King: Edward I and the Forging of Britain, Marc Morris, (New York: Pegasus Books, 2015), 227.
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