Genealogy of the Bryan and Martin Families
Family: Gruffydd / Gwertyl (F1947)
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Meredith, Prince of Powis ( -1135)
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Efa ( -1135)
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| Gwrgenas, of Caer-a-Chydewin ( -1135)
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| unknown ( -1135) |
| Gruffydd ( -1165)
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| Gwertyl ( -1165)
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Owen Cyfeiliog, Prince of Powis ( -1197)  |