in 1282 of Llywelyn ap Gruffudd. Well known 20th-century examples include Ymadawiad Arthur by T. Gwynn Jones, and Yr Arwr, by Hedd Wyn, which won the Eisteddfod chair in 1917 shortly after the death of its author in the First World War. References Welsh poetry Welsh-language literature Medieval Welsh literature Eisteddfod Western medieval lyric forms