"I have also much difficulty is ascertaining who the wife of Llewylyn really was. In some of the old Heraldic Pedigrees she is called Elen or Elianor, daughter of William de Barry; but I think it more likely that she was the daughter (and heiress) of Sir Robert Y Val, de Vale, or de la Vale, Lord of Trefgarn."
In a footnote, Bridgeman gives reasons for supposing her to be the daughter of de Valle. He also states, "She was certainly not, as she is called by the Heralds who were employed to draw up the Pedigree of King Henry VII, the daughter of William Comte de Barr by Elinor the daughter of King Edward I."