The St. John Genealogy Project
Origin and Ancestry DNA Database & Electronic Archive
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 | Cynfyn ap Genillin (1130- )
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 | Gwladus ferch Seisyll (1160- )
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| Seisyll ap Cynfyn (1170- )  |
| Ieuan ap Cynfyn (1170- ) |
| Arthen ap Cynfyn (1170- ) |
| Einion ap Cadrod (1170- )
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| Caradog ab Einion (1200- ) |
| Cynfyn "Fychan" ap Cynfyn (1170- )
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| Nest ferch Einion (1200- )
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| Dafydd ap Cynfyn "Fychan" (1200- ) |
| Jonet ferch Cynfyn "Fychan" (1200- ) |
| Hywel ap Cynfyn "Fychan" (1200- ) |
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