Alfonso of England, 1st Earl of Chester1 
He was created 1st Earl of Chester [England] in 1284.2
- [S6] G.E. Cokayne; with Vicary Gibbs, H.A. Doubleday, Geoffrey H. White, Duncan Warrand and Lord Howard de Walden, editors, The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant, new ed., 13 volumes in 14 (1910-1959; reprint in 6 volumes, Gloucester, U.K.: Alan Sutton Publishing, 2000), volume III, page 171. Hereinafter cited as The Complete Peerage.
- [S11] Alison Weir, Britain’s Royal Families: The Complete Genealogy (London, U.K.: The Bodley Head, 1999), page 83. Hereinafter cited as Britain’s Royal Families.
Margaret of England1 
Child of Margaret of England and Jean II de Brabant, Duc de Brabant
- Jan III Hertog van Brabant en Limburg Herzog von Niederlothringen+3 b. 1300, d. 5 Dec 1355
- [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 83. Hereinafter cited as Britain’s Royal Families.
- [S45] Marcellus Donald R. von Redlich, Pedigrees of Some of the Emperor Charlemagne’s Descendants, volume I (1941; reprint, Baltimore, Maryland, U.S.A.: Genealogical Publishing Company, 2002), page 57. Hereinafter cited as Pedigrees of Emperor Charlemagne, I.
Berengaria of England1 
She was also known as Berenice of England.2
- [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 83. Hereinafter cited as Britain’s Royal Families.
Mary of England1 
She was also known as Mary Plantagenet.3 She was a nun in 1284 at Amesbury Abbey, Amesbury, Wiltshire, EnglandG.2
- [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 83. Hereinafter cited as Britain’s Royal Families.
- [S125] Richard Glanville-Brown, online <e-mail address>, Richard Glanville-Brown (RR 2, Milton, Ontario, Canada), downloaded 17 August 2005.
Alice of England1 
- [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 82. Hereinafter cited as Britain’s Royal Families.
Lady Elizabeth Plantagenet1 
From 14 November 1302, her married name became de Bohun.
Children of Lady Elizabeth Plantagenet and Humphrey de Bohun, 4th Earl of Hereford
- Edmund de Bohun1
- Hugh de Bohun1 b. c 1303, d. 1305
- Lady Eleanor de Bohun+1 b. 1304, d. 1363
- Mary de Bohun1 b. 1305, d. 1305
- John de Bohun, 5th Earl of Hereford1 b. 23 Nov 1306, d. 20 Jan 1336
- Humphrey de Bohun, 6th Earl of Hereford1 b. 1309, d. 1361
- William de Bohun, 1st Earl of Northampton+ b. c 1311, d. 16 Sep 1360
- Edward de Bohun1 b. c 1311, d. 1334
- Margaret de Bohun+1 b. 3 Apr 1311, d. 16 Dec 1391
- Eneas de Bohun1 b. c 1314, d. b 1343
- Isabella de Bohun3 b. 1316, d. 1316
Beatrice of England1 
- [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 85. Hereinafter cited as Britain’s Royal Families.
Blanche of England1 
- [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 85. Hereinafter cited as Britain’s Royal Families.
Marguerite de France1,2 
Children of Marguerite de France and Edward I ‘Longshanks’, King of England
- Thomas of Brotherton, 1st Earl of Norfolk+ b. 1 Jun 1300, d. c Aug 1338
- Edmund of Woodstock, 1st Earl of Kent+ b. 5 Aug 1301, d. 19 Mar 1330
- Eleanor of England b. 4 May 1306, d. 1311
- [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 85. Hereinafter cited as Britain’s Royal Families.
Thomas of Brotherton, 1st Earl of Norfolk1 
He was created 1st Earl of Norfolk [England] on 16 December 1312.2 He gained the title of 1st Earl Marshall of England.1
Children of Thomas of Brotherton, 1st Earl of Norfolk and Alice Hayles
- Edward of Brotherton4 b. c 1319, d. b 13 Sep 1337
- Margaret Marshall of Brotherton, Duchess of Norfolk+1 b. c 1321, d. 24 Mar 1398/99
- Alice of Norfolk+1 b. c 1324, d. Nov 1351
Child of Thomas of Brotherton, 1st Earl of Norfolk and Mary de Braose
- John Plantagenet1 b. bt 1328 – 1362
- [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 85. Hereinafter cited as Britain’s Royal Families.
- [S6] G.E. Cokayne; with Vicary Gibbs, H.A. Doubleday, Geoffrey H. White, Duncan Warrand and Lord Howard de Walden, editors, The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant, new ed., 13 volumes in 14 (1910-1959; reprint in 6 volumes, Gloucester, U.K.: Alan Sutton Publishing, 2000), volume III, page 338. Hereinafter cited as The Complete Peerage.
- [S6] Cokayne, and others, The Complete Peerage, volume II, page 308.