Llywelyn ap Gruffudd (c. 1223 – 11 December 1282), sometimes written as Llywelyn ap Gruffydd, also known as Llywelyn the Last, or, in Welsh, Llywelyn Ein Llyw Olaf , was King of Wales from 1258, until his death at Cilmeri, in 1282. The son of Gruffudd ap Llywelyn Fawr and grandson of Llywelyn the Great, he was the last sovereign prince and king of Wales before its conquest by Edward I of England.