Dafydd (Davydd) ap Llywelyn Fawr Prince of Gwynedd  24
- Born: 1208
- Marriage: Isabela de Braose  in 1229
- Died: 25 Feb 1246, Aber., Canarvonshire at age 38
- Buried: Conway Abbey
4th great-grandson of William I , (The Conqueror) King of England .
Davydd (Dafydd) ap Llewelyn Fawr, Prince of Gwynedd was born in 1208 in Wales. He was the son of Llewelyn Fawr ap Iowerth, Prince of Wales and Joan Plantagenet . He married Isabella de Braose, daughter of William de Braose, in 1229. He died on 25 February 1246 in Aberconwy, Canarvonshire, Wales . He was buried after 25 February 1246 in Conway Abbey, Conway, Wales .
Became Prince of Gwynedd in 1240 when his father Llywelyn died. Known as David II, Ruler of All Wales.
Noted events in his life were:
• Acceded: Prince of Gwynedd, 1240.
Dafydd married Isabela de Braose  [MRIN: 4737], daughter of William de Braose  and Unknown, in 1229. (Isabela de Braose  was born about 1222 and died about 1248.)