| 1. | Lord of Duffryn Efnydd Gwerny Family/Spouse: Unknown. [Group Sheet] [Family Chart]
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| 2. | Hunydd Gwerny Family/Spouse: Prince of Powys Maremudd Ap Bleddyn. Maremudd (son of Prince of Deheubath Bleddyn Ap Cynfyn and Haer Y blaidd rydd) died in 1132. [Group Sheet] [Family Chart]
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| 3. | Prince of Powys Madoc Ap Maremudd Family/Spouse: Susanna Mawr. [Group Sheet] [Family Chart]
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| 4. | Margaret, of Powys Family/Spouse: Iowerth Drwyndwn Ap Owain Mawr. Iowerth (son of Prince of Gwynedd Owain Gwynedd Ap Gruffydd Mawr and Gwladys Ap Llywarch, of Pembroke) was born in 1125 in Aberffraw Castle, Aberffraw, Anglesey, Wales, United Kingdom; died in 1174 in Pennant Melangell, , Wales, United Kingdom. [Group Sheet] [Family Chart]
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