Dafydd ap Llywelyn
- J. B. Smith
Dafydd ap Llywelyn (c. 1215–1246), prince of Gwynedd, was the son of Llywelyn ab Iorwerth (d. 1240) and Joan (d. 1237), illegitimate daughter of King John. Llywelyn was promised Joan's hand in 1204 and the marriage probably took place the next year. Dafydd...