Genealogy of the Bryan and Martin Families
Family: Owen Cyfeiliog, Prince of Powis / Gwenllian (F1946)
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Gruffydd ( -1165)
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Gwertyl ( -1165)
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| Owen Gwynnedd ( -1169)
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| Gwladys ( -1170)
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Iorwerth Drwyndwn ( -1194)  |
| Gwenllian ( -1200)
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| Owen Cyfeiliog, Prince of Powis ( -1197)
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| Gwenwynwyn, Lord of Powis ( -1218) |