| Male OWAIN Iorwerth "Drwyndwn" Ap |
| Birth | 1145 | Aberffraw Castle, Aberffraw, Anglsy, Wales  |
| Death | Abt 1184 | |
| Burial | ||
| Marriage | Abt 1163 | |
| Father | GRUFFYDD Owain "Gwynedd" Ap | F1052 Group Sheet | |
| Mother | LLYWARCH Gwladus Verch | F1052 Group Sheet | |
| Female MADOG Margred Verch |
| Birth | Abt 1129 | Of Montgomeryshire, Wales |
| Death | ||
| Burial | ||
| Father | MAREDYDD Madog Ap | F1051 Group Sheet | |
| Mother | GRUFFYDD Susanna Verch | F1051 Group Sheet | |
| Male + IORWERTH Llewelyn Ap, Llewelyn the Great |
| Birth | 1173 | Aberffraw Castle, Caernarvonshire, Wales |
| Death | 11 Apr 1240 | Aberconwy, Arllechwedd Isaf, Caernarvonshire, Wales |
| Burial | ||
| Spouse | LLYWARCH Tangwystl Verch | F1023 | |
| Marriage | ||
| Spouse | ENGLAND Joan Princess Of | F654 | |
| Marriage | 1205 | England |
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