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%20MEDIEVAL1.htm#Richarddied1272B.
- [S336470] Wikipedia, (Online: https://en.wikipedia.org), "Richard, 1st Earl of Cornwall," at http://bit.ly/2hwdma2.
"Richard of Cornwall (5 January 1209 - 2 April 1272), second son of King John, was Count of Poitou (1225-1243), 1st Earl of Cornwall (from 1225) and German King (formally "King of the Romans") (from 1257). He was one of the wealthiest men in Europe and joined the Barons' Crusade, where he achieved success as a negotiator for the release of prisoners and assisted with the building of the citadel in Ascalon."
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- [S157] A Great and Terrible King: Edward I and the Forging of Britain, Marc Morris, (New York: Pegasus Books, 2015), 12-13.
- [S420] The Crusades: The Authoritative History of the War for the Holy Land, Thomas Asbridge, (New York: HarperCollins, 2010), 573.
- [S359] The Templars: The Rise and Spectacular Fall of God's Holy Warriors, Dan Jones, (New York: Viking, 2017), 236.
- [S20] The Knight Who Saved England: William Marshal and the French Invasion, 1217, Richard Brooks, (Oxford, UK: Osprey Publishing, 2014), 56.
- [S164] King John and the Road to Magna Carta, Stephen Church, (New York: Basic Books, 2015), 85-94, quoting 87-8.
- [S336429] Britain's Royal Families: A Complete Genealogy, Alison Weir, (London: Vintage Books, 2008), 69-72.
- [S336429] Britain's Royal Families: A Complete Genealogy, Alison Weir, (London: Vintage Books, 2008), 68.
- [S154] The Demon's Brood: A History of the Plantagenet Dynasty, Desmond Seward, (New York: Pegasus Books, 2014), 46.
- [S421] The Greatest Knight: The Remarkable Life of William Marshal, the Power Behind Five English Thrones, Thomas Asbridge, (New York: HarperCollins, 2014), 272.
- [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/LATIN%20LORDSHIPS%20IN%20GREECE.htm#GauthierBriennedied1311B.
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