Adam, David. Aidan, Bede, Cuthbert – three inspirational saints. (SPCK 2006)

Adam, David. Borderlands: the best of David Adam’s Celtic Vision.( Sheed & Ward 2000 )
ISBN-10: 1580510701.

Adam, David.  Flame in my Heart – St Aidan for today. (Triangle 1997)

Adam, David The Eye of the Eagle (SPCK 1990).

Adomnan’s Life of Columba

Adomnán’s ‘Law of the Innocents’: Cáin Adomnáin: A Seventh Century Law for the Protection of Non-Combatants translated by Gilbert Markus (Kilmartin House Trust 2008)

Allchin, A. M.  God’s Presence Makes the World  (DLT 1999)

Allchin, A. M.  Praise Above All, discovering the Welsh tradition (University of Wales Press, 1991)

Allen, J. Romilly. Celtic Art in Pagan and Christian Times (Methuen 1993)

Allen, J. Romilly see also Celtic Crosses in Wales, The High Crosses of Ireland, Early Christian Monuments of Scotland (two volumes)

Ancient Faith, Future Mission: new monasticism as fresh expression of church (Canterbury Press/Morehouse 2010)

Bede. The Ecclesiastical History of the English People. (Oxford University Press),
 ISBN: 019288660.

Bede. The life of Cuthbert.

Bishop Rhygyfarch’s Life of Saint David.

Bitel, Lisa Isle of the Saints: Monastic Settlement and Christian Community in Early Ireland
(Ithaca, New York 1990)

Bradley, Ian. Celtic Christianity: Making Myths and Chasing Dreams. (Edinburgh University Press, 1999), ISBN: 9780748610471

Bradley, Ian. Celtic Christian Communities: Live the Tradition. (Northstone Publishing),
ISBN: 1896836437, 9781896836430.

Bradley, Ian. The Celtic Way (DLT new edition 2003)

Bradley, Ian. Colonies of Heaven: Celtic Christian Communities (DLT 2000 UK: Northstone 2000 N. America)

Brown, Michelle. The Lindisfarne Gospels and the Early Medieval World (The British Library 2011)

Carmichael, Alexander The Carmina Gadelica, (Floris Books 1992)

Carmichael, Alexander The Celtic Gift of Nature: Illustrated Selections from the Carmina Gadelica in Gaelic and English (Floris Books)

Cavill, Paul. Anglo-Saxon Christianity  (Fount 1999)

Clunie, Grace Sacred Living: practical inspiration from celtic spirituality for the contemporary spiritual journey (The Columba Press 2011)

Clancy, Thomas Owen.  Iona: the Earliest Poetry of a Celtic Monastery (Edinburgh University Press 1995)

Connally, Hugh Irish penitentials and their significance for the sacrament of penance today. (Four Courts Press, 1995)

Craven, Janet, Ireland’s First Book: What does it say today? (Linden Publishing Company 2007)

Davies, Oliver. Celtic Spirituality (World Classics of Spirituality) (New York: Paulist Press )ISBN: 10: 0809138948.

Davies, Oliver and Bowie, Fiona Celtic Christian spirituality: an anthology of medieval and modern sources (Continuum 1995)

De Paor, Liam. (trans & commentary) Saint Patrick’s World: the Christian Culture of Ireland ’s Apostolic Age (Soft cover).University of Notre Dame Press, ISBN: 0268017573.

De Waal, Esther.  Celtic Vision (Liguori 2001)

De Waal, Esther.  The Celtic Way of Prayer.(Canterbury Press Norwich New Ed. 2010)

De Waal, Esther.  World Made Whole: Rediscovering the Celtic Tradition (Fount  1991)

Doble, G. H. Evans, D. Simon, ed. Lives of the Welsh Saints. (Cardiff: University of Wales Press 1971)  ISBN 0900768681

Doble, G. H. The Saints of Cornwall Complete set of 6 (reprinted by LLanerch Press)

Dunphy, James, Saint Ita the Forgotten Princess (Trafford Publishing  2006)

Ferguson, Ron. Chasing the Wild Goose (Wild Goose Publications; 2Rev Ed edition 2000)

Finnian:  Irish Life, ed. Whitley Stokes, Lives of the Saints from the Book of Lismore. (Oxford 1890. Vol. 2)

Fryer, Alfred Cooper. Llantwit Major: A Fifth Century University.(Ulan Press 2012)

Glascoe, Marin (ed) The Medieval Mystical Tradition: England, Ireland and Wales (University   of Exeter Press 1982) contains an article by Oliver Davies on Rhetoric of the Gift: Inspiration, Pneumatology and Poetic Craft in Medieval Wales.

Hamlin, Ann and Hughes, Kathleen The Modern Traveller to the Early Irish Church (Four Courts Press, reprinted 2004)

Harrington, Christina, Women in a Celtic Church – Ireland 450 1150 (OUP 2002)

Ireland in Early Medieval Europe edited by Dorothy Whitelock, Rosamond McKitterick and David Dumville (Cambridge University Press 2011)

Jackson. Kenneth. Studies in Early Celtic Nature Poetry. (Cambridge University Press 2011)

Jones, Noragh, Power of Raven, Wisdom of Serpent (Floris Books 1994)

Keane, Marcus.  The Towers and Temples of Ancient Ireland their origins and history. Literary Licensing, LLC (30 Mar. 2014)

Leatham, Diana. They built on Rock.(Hodder & Stoughton 1999)

Lehane, Brendan. Early Celtic Christianity.(Continuum 2005)

Mackey, P. Celtic Spirituality (Classics of Western Spirituality, Paulist Press 2000 )

Maclean, Alistair Hebridean Altars the spirit of an island race (Hodders 1999)

Macquarrie, John. Paths in Spirituality (SCM Press; New 2011)

Mayr-Harting, Henry. The Coming of Christianity to Anglo-Saxon England  (Pennsylvania #State University Press 1991)

McIntosh, Kenneth. Water from an Ancient Well: Celtic Spirituality for Modern Life. (New York : Anamchara Books, 2011). ISBN: 978-1-933630-98.

McNally, Robert S.J. (ed.) Old Ireland (Dublin: Gill& Son, 1965)

Meek, Donald. The Quest for Celtic Christianity.  (2,000 Handsel Press)

Menzies, Lucy.  Saint Columba of Iona, a short account of his life. (Iona Community 1961)

Mitton, Michael. Restoring the Woven Cord. (BRF 2010), ISBN: 978 1841018003.

Newell, Philip. Christ of the Celts: The Healing of Creation. Hardcover: 160 pages; Jossey-Bass, 2008. ISBN-10: 0470183500.

Newell, Philip. The book of Creation:  the practice of Celtic Spirituality.(Canturbury Press Norwich 1991)

O’Carragain, Tomas Churches in Medieval Ireland (Yale University Press 2010)

O’Donohue, John.  Anam Cara (Bantam Press 1997)

O’Donoghue, Noel Dermot, The Mountain Behind the Mountain (T&T Clark 1993)

O’Donoghue, Noel Dermot, Aristocracy of Soul- Patrick of Ireland.(DLT 1987)

O ‘ Loughlin, Thomas Celtic Theology: Humanity, World and God in Early Irish Writings. (Continuum 2000)

O ‘ Loughlin, Thomas and Sheldrake, Philip.  Journeys on the Edges: The Celtic Tradition. (Orbis Books 2000), ISBN-13: 978-1570753374.

O Maidin , Uinseann. The Celtic Monk rules and writings of early Irish monks (Cistercian Publications 1996).

Rees, Elizabeth. Celtic Saints in their Landscape. (Amberley Publishing),
ISBN: 978-1-4456-0108-3.

Rees, Elizabeth Celtic Saints: Passionate Wanderers – (Thames and Hudson 2000)

Robinson, Martin.  Rediscovering the Celts.(Fount 2000)

Ryan, John S.J.  Irish Monasticism (Four Courts Press 1992)

Sellner, Edward Wisdom of the Celtic Saints (Ave Maria Press 2003)

Sheldrake, Philip Living between Two Worlds:  place and journey in Celtic Spirituality
(DLT 1995)

Simpson, Ray. New Celtic Monasticism for everyday people. (Kevin Mayhew Ltd, 2014)

Simpson, Ray. Celtic Daily Light. (Kevin Mayhew Ltd), ISBN 1-84417-099-3.

Simpson, Ray. Celtic Journey CD/DVD. (Kevin Mayhew Ltd).

Simpson, Ray. Celtic Spirituality: Roots, Rhythms, Relationships. (Grove Books),
ISBN: 1-85174-530-0.

Simpson, Ray. Exploring Celtic Spirituality with Study Guide. (Kevin Mayhew Ltd, 2005). ISBN: 978-1-84417-186-6.

Simpson, Ray. Hilda of Whitby – a spirituality for now.(BRF 2014)

Simpson, Ray. The Celtic Prayer Book. Vol 4: Great Celtic Christians. (Kevin Mayhew Ltd, 2003)

Skinner John. translated by,. The Confession of St Patrick and letter to Coroticus. (Bantam Doubleday Bell 1998)

The Dictionary of Celtic Religion and Culture, edited by Bernhard Maier (The Boydell Press 2000)

The Early Church in Wales and the West, ed. Nancy Edwards and Alan Lane, (Oxbow, 1992) Wendy Davies’ paper The Myth of the Celtic Church

Toulson, Shirley.  The Celtic Alternative:  A reminder of the Christianity we lost (1987)

Tristram, Kate. Columbanus – the earliest voice of Christian Ireland.(Columba Press 2010)

Tyndale, William.  The Actes of Englysh Votaryes

Wallace, Martin. The Celtic Resource Book (Church House Publishing 2009)