References to reincarnation can be found in the Welsh Triads which are found in 1) Several sources in private collections. 2) the Myverian Archeology of Wales, by Owen Jones, Edward Williams, and William Owen Pughe, Denbigh Wales, 1870., 3) the Triodd ynnys Prydein, The Welsh Triads, by Rachel Bromwich, University of Wales Press, Cardiff, 1978 4) The Triads of Britain, by Iolio Morganwg, with an Introduction and Glossary by Malcolm Smith, Wildwood House, Ltd., London, 1977; and 5) The Four Ancient Books of Wales, by WF Skene, Edinburgh, Edmundson and Douglas, 2 vol., 1868.