Gwladus Ddu

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Gwladus Ddu, daughter of Llywelyn ap Iorwerth and Joan of England, died at Windsor, Berkshire, England, in 1251,1 and was buried at Wigmore Abbey, Herefordshire, England.2

Gwladus married (1), as his 2nd wife, Sir Reginald de Brewes, Knt., Lord of Abergaveny, son of William de Braose, 4th Lord of Bramber and Maud de Saint Valéry, in 1215;2 she married (2) Ralph de Mortimer, son of Roger de Mortimer, Lord Mortimer of Wigmore and Isabel de Ferrers, before 26 October 1230.2

See Royal Ancestry for evidence that Gwladus is the daughter of Joan of England, and not of a mistress of Llywelyn.3

Family 2

Ralph de Mortimer d. 13 Aug 1246
This person was last edited on16 Apr 2021


  1. [S1947] Douglas Richardson, Royal Ancestry: A Study in Colonial and Medieval Families, Five volumes (Salt Lake City, Utah: s.p., 2013), 4:164 (Mortimer 7), further cited as Richardson, Royal Ancestry.
  2. [S1947] Richardson, Royal Ancestry, 1:554 (Briwerre 4), 4:163 (Mortimer 7).
  3. [S1947] Richardson, Royal Ancestry, 4:163 (Mortimer 7).
  4. [S1947] Richardson, Royal Ancestry, 1:554 (Briwerre 4).