These include: Gwaith Meilyr Brydydd a'i ddisgynyddion (1994) Gwaith Llywelyn Fardd I ac eraill o feirdd y Ddeuddegfed Ganrif (1995) Gwaith Dafydd Benfras ac eraill o feirdd hanner cyntaf y Drydedd Ganrif ar Ddeg (1995) Gwaith Bleddyn Fardd ac Eraill (1996) References 1928 births Welsh literary critics Welsh-speaking academics Alumni of Jesus College, Oxford Academics of Aberystwyth University Celtic studies scholars 2015 deaths Fellows of the Learned Society of Wales Fellows of the British Academy