Dosparth Edeyrn Davod Aur; or, The ancient Welsh grammar, which was compiled by royal command in the thirteenth century by Edeyrn the Golden tongued, to which is added Y pum llyfr kerddwriaeth, or The rules of Welsh poetry, originally compiled by Davydd Ddu Athraw, in the fourteenth, and subsequently enlarged by Simwnt Vychan, in the sixteenth centry: with English translations and notes
Edeyrn, Davod Aur, fl. 1270; Davydd Ddu, Athraw, fl. 1340; Simwnt Fychan, 1530?-1606; Williams, John, 1811-1862; Society for the Publication of Ancient Welsh Manuscripts. Abergavenny