1055 - 1137 (82 years)
| Llewelyn "Fawr" Iowerth Abt 1173-1240 |
| Llewelyn "Fawr" Iowerth | |
| B: | Abt 1173 |
| , Anglesey, Wales | |
| D: | 11 Apr 1240 |
| Aberconway, Carnarvon, , WLS | |
 | Joan (Joanna) Of England 1191-1237 |
| Joan (Joanna) Of England | |
| B: | 1191 |
| M: | 1204 |
| D: | 2 Feb 1237 |
| Llyn Eglwystl, , , WLS | |
| Tangwystl Goch Ferch Llywarch | |
| B: | 1165 |
| Iowerth "Drwyndwn" Ap Owain Gwynedd Abt 1140-Yes, date unknown |
| Iowerth "Drwyndwn" Ap Owain Gwynedd | |
| B: | Abt 1140 |
| D: | Yes, date unknown |
| Owain Gwynedd Abt 1110-1170 |
| Owain Gwynedd | |
| B: | Abt 1110 |
| D: | 1170 |
| Gwladys Vz Llywarch Ap Trahaearn Ap Caradog | |
| B: | Abt 1113 |
| Wales | |
|
| Gruffydd Ap Cynan 1055-1137 |
| Gruffydd Ap Cynan | |
| B: | 1055 |
| D: | 1137 |
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