The Descent of Richard Fitzalan, 11th Earl of Arundel from Llewelyn the Great, Prince of Wales
| Llewelyn the Great, Prince of Wales (1173-1240) | = | Tangwystl (She was Llewelyn's mistress) |
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| Gladys Dhu
("the dark-eyed") (d. 1251) While Gladys Dhu was certainly Llewelyn's daughter, it is not certain that Tangwstyl was her mother. |
= | Ralph Mortimer (d. 1246) |
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| Roger Mortimer (d. 1282) | = | Matilda (Maud) de Braose (d. 1301) |
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| Isabella Mortimer | = | John Fitzalan (1246-1271) |
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| Richard Fitzalan, Earl of Arundel (1266-1301) | = | Alassia de Saluzzo (d. 1292) |
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| Edmund Fitzalan, Earl of Arundel (1285-1326) | = | Alice de Warenne |
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| Richard Fitzalan, Earl of Arundel (c. 1306-1376) | = | Eleanor Plantagenet (c. 1310-1372) |
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| Richard Fitzalan, Earl of Arundel
(c. 1348-1397) (See 'The Descent of Hughes'.) |
= | Elizabeth de Bohun (d. 1385) |