- The Grail: The Celtic Origins of the Sacred Icon by Jean Markale, 1999-05-01
- Christianity In Celtic Lands: A History Of The Churches Of The Celts, Their Origin, Their Development, Influence And Mutual Relations (Celtic studies) by Louis Gougaud, 2004-10-30
- The Celtic Year: A Month-By-Month Celebration of Celtic Christia Festivals and Sites by Shirley Toulson, 1996-10
- Celtic Fire: The Passionate Religious Vision of Ancient Britain and Ireland by Robert Van De Weyer, 1991-08-01
- Wisdom of the Celtic Saints by Edward C. Sellner, 1993-01
- Fingal's Cave, the Poems of Ossian, and Celtic Christianity by Paul Marshall Allen, Joan Deris Allen, 1999-05
- The Quest of Three Abbots : The Golden Age of Celtic Christianity by Brendan Lehane, 1994-06
- The Voice of the Eagle/the Heart of Celtic Christianity: Homily on the Prologue to the Gospel of St. John by John Scotus Eriugena, 1990-11
- Mull and Iona: Highways and Byways, the Fairest of the Inner Hebridean Isles and Scotland's Great Centre of "Celtic Christianity" (Luath Guides) by Peter MacNab, P A Macnab, 1999-09-01
- Celtic Saints: Passionate Wanderers by Elizabeth Rees, 2000-06
- Walking with the Celtic Saints: A Devotional by Andrew Seddon, 2004-04-25
- The Book of Celtic Saints by Elaine Gill, Courtney Davis, 1996-03
- The Celtic Way of Prayer: The Recovery of the Religious Imagination by Esther De Waal, 1999-07-20
- Holy Companions: Spiritual Practices from the Celtic Saints by Mary C. Earle, Sylvia Maddox, 2004-07-02
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