His canon has not been fixed, and there are textual confusions. In the Bulletin of the Board of Celtic Studies, vol. i, part 2, 123-33, Dr. Henry Lewis published a study of the poems attributed to him in the R. B. H. Poetry and in The Myvyrian Archaiology of Wales Rhisierdyn sang panegyric awdlau to Gronwy (Fychan) ap Tudur (died 1382; see Ednyfed Fychan) and to Myfanwy his wife, and an elegiac awdl to Sir Hywel y Fwyall. The awdl to the abbot of Aberconwy which The Myvyrian Archaiology of Wales attributes to Casnodyn is given in NLW MS 4973B 260b to Rhisierdyn, and Peniarth MS 118 (140) attributes to Rhisierdyn the pious ode 'y Duw uchaf y Kyfarchaf …' which is ascribed in R. B. H. Poetry (col. 1251) to Bleddyn Ddu. Many manuscripts (e.g. Bodl. 1 and 2, Peniarth MS 90 and Peniarth MS 100 ) include a panegyric cywydd to Hwlcyn ap Howel ap Ierwerth Ddu of Presaddfed, Anglesey ('Cad ddirwy keidw ddwyrodd'), which they attribute to Rhisierdyn. A pilgrimage by Hwlcyn to Jerusalem is mentioned in this poem.
Published date: 1959
Article Copyright: http://rightsstatements.org/page/InC/1.0/
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