Isabella de Cornwall1 
- [S106] Royal Genealogies Website (ROYAL92.GED), online http://www.daml.org/2001/01/gedcom/royal92.ged. Hereinafter cited as Royal Genealogies Website.
- [S11] Alison Weir, Britain’s Royal Families: The Complete Genealogy (London, U.K.: The Bodley Head, 1999), page 68. Hereinafter cited as Britain’s Royal Families.
Richard de Cornwall1

In 1283 he was granted by his half-brother 2nd Earl of Cornwall, the Manor of Thunnock, Lincolnshire.1 He fought in the Siege of Berwick in 1296.1
Children of Richard de Cornwall
- Sir Geoffrey de Cornwall+2 d. b Jun 1335
- Sir Edmund Cornwall1
- Joan de Cornwall+2
Jeanne de Valletort1
Child of Jeanne de Valletort and Richard, 1st Earl of Cornwall
- Richard de Cornwall+2 d. 1296
- [S106] Royal Genealogies Website (ROYAL92.GED), online http://www.daml.org/2001/01/gedcom/royal92.ged. Hereinafter cited as Royal Genealogies Website.
- [S37] BP2003 volume 2, page 1670. See link for full details for this source. Hereinafter cited as. [S37]
Jordan of Germany Hohenstaufen 
- [S11] Alison Weir, Britain’s Royal Families: The Complete Genealogy (London, U.K.: The Bodley Head, 1999), page 70. Hereinafter cited as Britain’s Royal Families.
- [S106] Royal Genealogies Website (ROYAL92.GED), online http://www.daml.org/2001/01/gedcom/royal92.ged. Hereinafter cited as Royal Genealogies Website.
Margaret of Swabia 
Children of Margaret of Swabia and Albrecht I Landgraf von Thüringen
- Heinrich von Thüringen+ b. 21 Mar 1256, d. bt 25 Jan 1282 – 23 Jul 1282
- Friedrich I Markgraf von Meißen+ b. c 1257, d. 16 Nov 1323
- Dietrich Landgraf von Thüringen b. c 1260, d. 10 Dec 1307
- Agnes von Thüringen+ b. bt 1261 – 1264, d. a 1332
- [S106] Royal Genealogies Website (ROYAL92.GED), online http://www.daml.org/2001/01/gedcom/royal92.ged. Hereinafter cited as Royal Genealogies Website.
- [S16] Jirí Louda and Michael MacLagan, Lines of Succession: Heraldry of the Royal Families of Europe, 2nd edition (London, U.K.: Little, Brown and Company, 1999), table 113. Hereinafter cited as Lines of Succession.
Agnes of Germany Hohenstaufen 
- [S106] Royal Genealogies Website (ROYAL92.GED), online http://www.daml.org/2001/01/gedcom/royal92.ged. Hereinafter cited as Royal Genealogies Website.
- [S11] Alison Weir, Britain’s Royal Families: The Complete Genealogy (London, U.K.: The Bodley Head, 1999), page 70. Hereinafter cited as Britain’s Royal Families.
Heinrich of Germany von Hohenstaufen, King of Jerusalem1 
He gained the title of King Heinrich of Sicily. He gained the title of King Henry of Jerusalem.2
- [S11] Alison Weir, Britain’s Royal Families: The Complete Genealogy (London, U.K.: The Bodley Head, 1999), page 71. Hereinafter cited as Britain’s Royal Families.
- [S106] Royal Genealogies Website (ROYAL92.GED), online http://www.daml.org/2001/01/gedcom/royal92.ged. Hereinafter cited as Royal Genealogies Website.
- [S11] Alison Weir, Britain’s Royal Families, page 70.
Simon de Montfort1 
- [S106] Royal Genealogies Website (ROYAL92.GED), online http://www.daml.org/2001/01/gedcom/royal92.ged. Hereinafter cited as Royal Genealogies Website.
- [S11] Alison Weir, Britain’s Royal Families: The Complete Genealogy (London, U.K.: The Bodley Head, 1999), page 71. Hereinafter cited as Britain’s Royal Families.
Guy de Montfort, Count di Nola1 
He gained the title of Count di Nola.2,1
Children of Guy de Montfort, Count di Nola and Margaret Aldobrandeschi
- [S11] Alison Weir, Britain’s Royal Families: The Complete Genealogy (London, U.K.: The Bodley Head, 1999), page 71. Hereinafter cited as Britain’s Royal Families.
- [S106] Royal Genealogies Website (ROYAL92.GED), online http://www.daml.org/2001/01/gedcom/royal92.ged. Hereinafter cited as Royal Genealogies Website.
Richard de Montfort1 
- [S106] Royal Genealogies Website (ROYAL92.GED), online http://www.daml.org/2001/01/gedcom/royal92.ged. Hereinafter cited as Royal Genealogies Website.
- [S11] Alison Weir, Britain’s Royal Families: The Complete Genealogy (London, U.K.: The Bodley Head, 1999), page 71. Hereinafter cited as Britain’s Royal Families.