New France Genealogy
Montjoie Saint Denis!
Family: ap Owain, Iorwerth / verch Madog, Margaret (F9924)
Prince of Wales Owain (1087-1169) 
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verch Llywarch, Gwladys (1098- )
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| vercy Owain, Gwenllian (1124- ) |
| ap Owain, Maelgwn (1126-1175) |
| ap Owain, Cynan (1128-1174) |
| ap Maredydd, Madog (1091-1160)
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| verch Gruffydd, Susanna (1095- )
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ap Madog, Prnc/Powys Fadog Gruffydd (1121-1191)  |
| ap Madog, Llewelyn (1123-1160) |
| ap Madog, Owain "Fychan" (1125- ) |
| ap Madog, Elissau (1127- ) |
| verch Madog, Gwenllian (1131- ) |
| ap Owain, Iorwerth (1130-1184)
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| verch Madog, Margaret (1134- )
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| Prince of Wales Llewellyn (1173-1240) |