Lewis, Barry James (2018) Ar drywydd Magna, ‘chwaer Dewi Sant’, ac eglwys ddiflanedig yn Nyffryn Teifi. Studia Celtica, 52. (Accepted Version)
Lewis, Barry James (2019) Arthurian references in medieval Welsh poetry, c. 1100-c. 1540. In: Arthur in the Celtic Languages: The Arthurian Legend in Celtic Literatures and Traditions. Arthurian Literature in the Middle Ages (9). University of Wales Press and the Vinaver Trust, Cardiff, pp. 187-202. ISBN 978-1-78683-343-3 (Accepted Version)
Lewis, Barry James (2018) Review: Hayden and Russell, Grammatica, Gramadach and Gramadeg: Vernacular Grammar and Grammarians in Medieval Ireland and Wales. Celtica, 30. pp. 223-229. ISSN 0069-1399