William

• Name	William
  	Stated by Sandford to have witnessed, as his brother, a charter of Stephen's legitimate son William. [2]
  Siblings	1 sister
  1. William > 2. Sybilla   d. 1141 ▻ Hervey le Breton of Léon, Earl of Wiltshire
  Half siblings	3 half brothers and 2 half sisters (family of Stephen of Blois and Matilda )
  1. Baldwin de Boulogne + 2. Eustace IV, Count of Boulogne,   b. Abt 1129   d. 10 Aug 1153  (Age 24 years) ▻ Constance,  m. Feb 1140 > 3. Sir William FitzRoy, Count of Boulogne and Mortain ,   b. Abt 1135   d. Oct 1159, France  (Age 24 years) ▻ Isabel de Warenne, Countess of Surrey > 4. Matilda,   b. Abt 1133   d. Abt 1135, Tower of London, London, England  (Age 2 years) ▻ Waleran IV, Count of Meulan, Earl of Worcester,  m. Abt 1134 + 5. Mary of Blois, Princess of England,   b. Abt 1131, Blois, Loir-et-Cher, Centre-Val de Loire, France d. 25 Jul 1180  (Age 49 years) ▻ Matthew of Alsace, Comte de Boulogne,  m. 1160
  Half siblings	2 half brothers and 1 person of an unknown gender (family of Stephen of Blois and Dameta de Normandie )
  1. Almaric   2. Ralph   3. Gervaise of Westminster, Abbot of Westminster Abbey,   b. Between 1115 and 1120   d. 1160  (Age 45 years)
  Patriarch & Matriarch	Theobald I, Viscount of Troyes   d. About 942/43  (5 x Great Grandfather)
  Person ID, Branch	I24289
  Last Modified	17 Jul 2020

  
  

  Father	Stephen of Blois, King of England ,   b. 1095/96, Blois, Loir-et-Cher, Centre-Val de Loire, France d. 25 Oct 1154, Dover Castle, Dover, Kent, England Dover Castle, Dover, Kent, England (Age 58 years)
  Relationship	Natural
  Family ID	F8629	Group Sheet  |  Family Chart

  
  

• Pedigree

  ← Click to display 1William 2Stephen of Blois, King of England (1095/96 – 1154) 4Stephen III, Count of Blois(1046 – 1102) 8Theobald III, Count of Champagne(1012 – 1089) 16Eudes II, Count of Blois and Champagne(990 – 1037) 17Ermengarde of Auvergne( – 1040) 9Alix de Crepi 18 19 5Adele of Normandy, Princess of England(1062 – 8 Mar 1137/38) 10William I, King of England(1027 – 1087) 20Robert I, Duke of Normandy(1000 – 1035) 21Herleva de Falaise(1012 – 1050) 11Maltilda of Flanders, Duchess of Normandy and Queen of England(1032 – 1083) 22Baldwin V de Lille, Count of Flanders(1012 – 1067) 23Adelaide of France, Princess of France(1009 – 1078) 3 6 12 24 25 13 26 27 7 14 28 29 15 30 31

  
  

• Sources 🟢 Primary Evidence 🟡 Secondary Evidence 🟠 Tertiary Evidence 🔴 Unreliable Evidence

  [S1569] Lundy, Darryl. The Peerage web site, (Wellington, New Zealand: http://www.thepeerage.com/index.htm, 2019). [S1447] Sheppard, Walter Lee. "Royal Bye-Blows The Illegitimate Children of English Kings from William to Edward III" , (Boston: The New England Historical and Genealogical Register, volume CXVIX, April 1965).