Commentary
Cawley: "Because Mathilde had five children by her first husband who died in [1172], she could not have been the daughter of Hamelin by his wife Isabelle de Warenne (which is what Europäische Stammtafeln says) considering their marriage in 1164. There are therefore two possibilities: either Mathilde was Hamelin’s daughter by an otherwise unrecorded earlier marriage or she was the daughter of Isabelle de Warenne by her first marriage. The latter possibility appears unlikely as any daughter of Guillaume de Blois Comte de Boulogne would have been Ctss de Boulogne instead of Guillaume’s sister, while in any case the chronology appears tight for Mathilde to have been Isabelle’s daughter. Until more information comes to light, it is supposed that Mathilde was Hamelin’s daughter by an earlier marriage."
Family
ClaimDetailEvidence
FatherHamelin Plantagenet, Earl of Surrey (1130-1202) [S756] [S2611] [S3218:192]
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Spouse 2ndHenri d’Eu Comte d’Eu (~1155-1183) 
Child +Alix d’Eu Countes d’Eu (e1174-1246) [S756] [S2611] [S3218:192]
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Attributes
ClaimDetailEvidence
GenderFemale
NameMathilde d'Anjou [S2611]
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NameMaud de Warenne [S756]
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NameMaude de Warenne [S3218:192]
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FatherHamelin Plantagenet, Earl of Surrey (1130-1202) [S756] [S2611] [S3218:192]
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Marriage 3rd [S756] [S2611]
Henry de Stouteville, Lord of Eckington
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Timeline
ClaimDateDetailAgeEvidence
Birthest 1151 (1145-1151)
 
Marriage 1st 1163 - 1167 [S954]
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Marriage 2ndaft 1172Henri d’Eu Comte d’Eu (~1155-1183) [S954] [S2611]
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Deathabt 1212 [S756]
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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).
[S954] Cawley, Charles, "Foundation of Medieval Genealogy (Medieval Lands - England Earls 1067-1122)" (2006-7 (v1.1 Updated 23 April 2007)).
[S2611] Cawley, Charles, "Foundation of Medieval Genealogy (Medieval Lands - Normandy: Aumale, Rouen, Eu )" (v4.2 Updated 30 May 2018) (https://fmg.ac/Projects/MedLands/normacre.htm).
[S3218] Douglas Richardson, "Plantagenet Ancestry, Vol. 1" (2011) (https://archive.org/details/plantagenetances0000rich).
Kinship Lines for Mathilde d'Anjou
Spouse/PartnerDegreeRelationshipMRCA
Henri d’Eu Comte d’Eu (~1155-1183)145th Cousin 2x removedRichard I, Duke of Normandy (~932-996)
Henri d’Eu Comte d’Eu (~1155-1183)166th Cousin 2x removedGeoffrey Grisgonelle I, Count of Anjou (~938-987)
Henri d’Eu Comte d’Eu (~1155-1183)166th Cousin 2x removedAdelaide de Vermandois (e950-974)
Henri d’Eu Comte d’Eu (~1155-1183)167th CousinGunnor, Duchess of Normandy (~950-1031)
Henri d’Eu Comte d’Eu (~1155-1183)177th Cousin 1x removedGerberga of Saxony (914-984)
Henri d’Eu Comte d’Eu (~1155-1183)177th Cousin 1x removedRagenold Comte de Roucy (e926-)
Henri d’Eu Comte d’Eu (~1155-1183)177th Cousin 1x removedAlberade of Lorraine (~930-)
Henri d’Eu Comte d’Eu (~1155-1183)188th CousinHerbert de Vermandois II, Count of Vermandois and Troyes (~880-943)
Henri d’Eu Comte d’Eu (~1155-1183)188th CousinLiegarde of France (e887-)
Henri d’Eu Comte d’Eu (~1155-1183)198th Cousin 1x removedRegnier Langhals I, Count of Hainaut (~850-~916)
Henri d’Eu Comte d’Eu (~1155-1183)198th Cousin 1x removedAlberada (e860-916)