Rachel Bromwich is an Emeritus Reader in Celtic Languages and Literature of the University of Cambridge and an Honorary Professorial Fellow of St David’s University College, Lampeter. Her many publications include one of the most significant scholarly works of the last fifteen years, namely Trioedd Ynys Prydain:The Welsh Triads. She has also contributed a number of valuable studies of the Welsh poet Dafydd ap Gwylim, including Dafydd ap Gwylim: A Selection of Poems, Aspects of the Poetry of Dafydd ap Gwylim and the volume on the poet in the Writers of Wales series. While a student at Bangor she was a pupil of Sir Ifor Hughes and she later edited a collection of his studies in the volume The Beginnings of Welsh Poetry. In 1991 she co-edited with B.F. Roberts and A.O.H. Jarman the important book The Arthur of the Welsh. D. Simon Evans is Honorary Director of the Centre for Research and Scholarship at St David’s University College, Lampeter. From 1974 to 1988 he was Professor of Welsh at the College and before that he taught at the University College, Dublin, Liverpool University and University College Swansea. He is a prominent scholar of medieval Welsh literature and his many important works include Gramadeg Cymraeg Canol, Buched Dewi, A Grammar of Middle Welsh, Doble’s Lives of the Welsh Saints, Historia Gruffud vab Kenan, The Life of St David and Medieval Religious Literature in the Writers of Wales series.