 MaleIorwerth Drwyndwn |
| Birth | Abt 1130 | |
| Death | 1174 | Pennant-Melangell, Powys, Wales  |
| Burial | ||
| Marriage | ||
| Father | Owain Gwynedd | F5032 Group Sheet | |
| Mother | Gwladys ferch Llywarch | F5032 Group Sheet | |
| Male + Llywelyn the Great |
| Birth | Abt 1173 | |
| Death | 11 Apr 1240 | |
| Burial | ||
| Spouse | Joan Plantagenet | F5030 | |
| Marriage | ||
| Spouse | Tangwystl ferch Llywarch | F283 | |
| Marriage | ||
Female