Drwyndwn, Prince of North Wales Iorworth
- 1174(
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- 1 Drwyndwn, Prince of North Wales Iorworth [1] d. 1174
- Powys-Vadoc, Maret of
- 2 Iorworth, Ap Prince, N.Wales Llewellyn [1.1] b. Abt 1164 d. 11 Apr 1240
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- 3 Helen, of North Wales [1.1.1]
- Donald, Earl ofMar d. 1297
- 4 Mar, Isabel of [1.1.1.1] d. 1297
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- 4 Mar, Isabel of [1.1.1.1]
- 3 Helen, of North Wales [1.1.1]
- 2 Iorworth, Ap Prince, N.Wales Llewellyn [1.1]