High Quality Content by WIKIPEDIA articles! Dafydd ap Gwilym (c. 1315/1320 – c. 1350/1370), is regarded as one of the leading Welsh poets and amongst the great poets of Europe in the Middle Ages. (Dafydd ap Gwilym scholar R. Geraint Gruffydd suggests ca.1315-ca.1350 as his dates; other scholars place him a little later, ca.1320-ca.1370.)