Commentary
Charles Cawley lists her mother as either the 1st or the 2nd mistress of Llywelyn the Great
Family
ClaimDetailEvidence
FatherLlywelyn Fawr ap Iorwerth, Prince of North Wales (~1173-1240) [S756] [S934]
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MotherTangwystl (e1174-) [S756]
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Spouse 1stReginald de Braiose, Lord of Abergavenny (e1176-~1228) 
Spouse 2ndRalph de Mortimer, Lord Mortimer of Wigmore (e1193-1246) 
Child +Roger de Mortimer of Wigmore (~1231-1282) [S756] [S917]
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Attributes
ClaimDetailEvidence
GenderFemale
NameGwladus [S934]
Nickname: Gwladus Ddu (dark-eyed)
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NameGwladus Dhu [S905] [S917] [S934] [S3168]
Nickname: Gwladus Dark-eyed
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NameGladys Dhu [S756]
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NameGwladys Dhu [S756]
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NameGwladus Ddu ('the Black') [S934]
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NameGwladus `Dhu Dark-eyed` [S905]
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NameGwladus Ddh `Dark-eyed [S917]
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FatherLlywelyn Fawr ap Iorwerth, Prince of North Wales (~1173-1240) [S756] [S934]
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MotherTangwystl (e1174-) [S756]
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Timeline
ClaimDateDetailAgeEvidence
Birthest 1194 (1194-1196)
 
Marriage 1stabt 1215/16Reginald de Braiose, Lord of Abergavenny (e1176-~1228) [S756] [S934] [S3168]
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Marriage 2nd1230Ralph de Mortimer, Lord Mortimer of Wigmore (e1193-1246) [S756] [S905] [S917]
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Death1251Windsor, Windsor and Maidenhead, England [S934]
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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).
[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).
[S917] Cawley, Charles, "Foundation of Medieval Genealogy (Medieval Lands - England Earls 1207-1297)" (2006-7 (v.1.1 Updated 26 Jun 2006 )).
[S934] Cawley, Charles, "Foundation of Medieval Genealogy (Medieval Lands - Wales)" (2006-7 (v1.1 Updated 12 April 2007)) (https://fmg.ac/Projects/MedLands/WALES.htm).
[S3168] Cawley, Charles, "Foundation of Medieval Genealogy (Medieval Lands - English Lords, A-C)" (v4.14 Updated 06 June 2024) (https://fmg.ac/Projects/MedLands/ENGLISHNOBILITYMEDIEVAL3.htm).
Kinship Lines for Gwladus
Spouse/PartnerDegreeRelationshipMRCA
Reginald de Braiose, Lord of Abergavenny (e1176-~1228)135th Cousin 1x removedAngharad verch Maredudd (e969-)
Reginald de Braiose, Lord of Abergavenny (e1176-~1228)209th CousinAnarawd ap Rhodri Mawr, King of Gwynedd (e852-916)