Dosparth Edeyrn Davod Aur; Or the Ancient Welsh Grammar, which was Compiled ... in the 13. Cent. by Edeyrn the Golden Tongued, to which is Add. Y Pum Llyfr Kerddwriaeth Or the Rules of Welsh Poetry, Originally Compiled by Davydd Ddu Athraw in the 14., and ... Enlarged by Simwet Vychan in the 16. Cent
