Dafydd ap Llywelyn
| Dafydd ap Llewelyn | |
|---|---|
Dafydd with his father Llywelyn ab Iorwerth and half-brother Gruffudd | |
| King of Gwynedd | |
| Reign | 1240–1246 |
| Predecessor | Llywelyn ab Iorwerth |
| Successor | Llywelyn ap Gruffudd |
| Born | March 1212 Castell Hen Blas, Coleshill, Bagillt, Flintshire, Wales |
| Died | 25 February 1246 (aged 33) Abergwyngregyn |
| Burial | |
| Spouse | Isabella de Braose |
| Issue | Dafydd ap Dafydd ap Llywelyn |
| House | Aberffraw |
| Father | Llywelyn ab Iorwerth |
| Mother | Joan, Lady of Wales |
Dafydd ap Llywelyn (c. March 1212 – 25 February 1246) was King of Gwynedd from 1240 to 1246.