| A calendar of the public records relating to Pembrokeshire | | Monograph or Collective Volume | Cymmrodorion Society | 1892- |
| A survey of the demands made on the Welsh shires to supply soldiers for the Irish War 1594-1602 | McGurk, J. N. N. (John James Noel) | Article in Journal | | 1983 |
| Celts, Britons and Gaels : names, peoples and identities | Koch, John T. | Article in Journal | | 2003 |
| Edward Lhuyd's collection of Irish manuscripts | O'Sullivan, AnneO'Sullivan, William, 1921-2000 | Article in Journal | | 1962 |
| Evelyn : a true story | Doyle, Evelyn | Monograph or Collective Volume | Orion | 2002 |
| God and the gun : the church and Irish terrorism | Dillon, Martin | Monograph or Collective Volume | Orion | 1997 |
| Gwriad's heritage : links between Wales and the Isle of Man in the early middle ages | Jones, B. L. | Article in Journal | | 1990 |
| Kieren Fallon : the biography | Longmore, Andrew, 1953- | Monograph or Collective Volume | Orion | 2008 |
| Lives of the British saints : the saints of Wales and Cornwall and such Irish saints as have dedications in Britain | Baring-Gould, Sabine, 1834-1924Fisher, John, 1862-1930 | Monograph or Collective Volume | Llanerch Publishers | 2000 |
| My autobiography | McCoy, A.P. | Monograph or Collective Volume | Orion | 2011 |
| Pagan Celtic religion : archaeology and myth | Green, Miranda J. (Miranda Jane), 1947- | Article in Journal | | 1990 |
| Ruby : the autobiography | Clerkin, MalachyWalsh, Ruby, | Monograph or Collective Volume | Orion | 2012 |
| Sea raiders in the waters between Anglesey and Ireland during the 17th & 18th centuries | Williams, M. L. | Article in Journal | | 1946 |
| The Brehon laws and their relation to the ancient Welsh institutes | Brynmor-Jones, David | Article in Journal | | 1904 |
| The changing distribution of the Celtic languages in the British Isles | Jones, Emrys | Article in Journal | | 1967 |
| Why Cors Fochno? | Gruffydd, R. Geraint | Article in Journal | | 1996 |