Commentary
Todd Farmerie: Gundred, wife of William de Warenne is known not to have been daughter of William the Conqueror, that being based on a forged foundation legend of a religious house."

According to David C. Douglas, "William the Conqueror," (London, 1964), p. 392, "The view once held that Matilda was already married when William sought her hand, and was then the mother of a daughter, Gundrada, later the wife of William of Warenne, has now been conclusively disproved by the researches of Chester Waters and Sir Charles Clay. There is no reason to suppose that Gundrada was the daughter either of William or Matilda."

Charles Cawley: "sister of Gerbod "the Fleming" Earl of Chester"
Family
ClaimDetailEvidence
SpouseWilliam de Warenne, 1st Earl of Surrey (~1035-1088) 
Child +William de Warenne, 2nd Earl of Surrey (e1071-1138) [S756] [S954]
research
Child +Edith de Warenne (~1072-) [S954]
research
Attributes
ClaimDetailEvidence
GenderFemale
NameGundred [S756] [S905] [S954]
research
Timeline
ClaimDateDetailAgeEvidence
Birthest 1036 (1036-1052)
 
Marriage1070William de Warenne, 1st Earl of Surrey (~1035-1088) [S954]
Cawley says 1118
research
DeathMay 27, 1085Castle Acre, Norfolk, England [S954]
died in childbirth
6 kalends of June 1085
research
Sources
IndexTitle
[S756] Weis, Frederick Lewis, "Ancestral Roots of Sixty Colonists Who Came To New England before 1700, 7th Ed." (Genealogical Publishing Co., Inc., Baltimore, 1999).
[S905] Cawley, Charles, "Foundation of Medieval Genealogy (Medieval Lands - Normandy: Alencon, Evereux, Meulan, Perche)" (2006-7 (v1.1 Updated 02 March 2007)) (https://fmg.ac/Projects/MedLands/NORMANDY NOBILITY.htm).
[S954] Cawley, Charles, "Foundation of Medieval Genealogy (Medieval Lands - England Earls 1067-1122)" (2006-7 (v1.1 Updated 23 April 2007)).