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/ENGLISH%20NOBILITY%20MEDIEVAL.htm#IsabelFitzRobertdied1217.
- [S336429] Britain's Royal Families: A Complete Genealogy, Alison Weir, (London: Vintage Books, 2008), 62.
"Isabella died, probably suddenly, on 14 October or c. 18 November, 1217, and was buried in Canterbury Cathedral, Kent."
- [S336465] Eleanor of Aquitaine: A Life, Alison Weir, (New York: Ballantine iBook, 2008), 594.
- [S336429] Britain's Royal Families: A Complete Genealogy, Alison Weir, (London: Vintage Books, 2008), 62.
- [S164] King John and the Road to Magna Carta, Stephen Church, (New York: Basic Books, 2015), 38.
- [S422] Richard I (English Monarchs Series), John Gillingham, (New Haven: Yale University Press, 1999), 119.
- [S336465] Eleanor of Aquitaine: A Life, Alison Weir, (New York: Ballantine iBook, 2008).
- [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).
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