- The Spirituality of Celtic Saints by Richard J. Woods, 2000-04
- The Celtic Year by Shirley Toulson, 1993-08
- The Celtic Penitentials And Their Influence on Continental Christianity by John Thomas Mcneill, 1899-12-31
- The Celtic Churches; A History A.D. 200 to 1200 by John T. McNeill, 1974-04
- Celtic Women: Women in Celtic Society and Literature by Peter Berresford Ellis, 1996-04
- Celtic Parables: Stories, Poems, & Prayers by Robert Van De Weyer, Robert Van De Weyer, 1998-09
- The Celtic Saints by Courtney Davis, 2001-06-30
- Drinking from the Sacred Well: Personal Voyages of Discovery with the Celtic Saint by John Matthews, 1998-12-01
- Feil-sgribhinn Eoin Mhic Neill (Celtic studies)
- Urban Iona: Celtic Hospitality in the City by Kurt Neilson, 2007-02-01
- Winifred's Well by John A. Shaffer, 2008-01-02
- In the House of Memory: Ancient Celtic Wisdom for Everyday Life by Steve Rabey, 1999-11-01
- Irish Jesus, Roman Jesus: The Formation of Early Irish Christianity by Graydon F. Snyder, 2002-10
- Life as Pilgrimage: A View from Celtic Spirituality by David Moffett-moore, 2007-06-04
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