Celts to the Creche: St. Deiniol of Wales

St. Deiniol icon by unknown writer                                                St. Deiniol icon by unknown writer 

Celts to the Crèche

Day 28

December 12

St. Deiniol of Wales

died 584 AD

On this 28th day of the Celts to the Crèche, we meet St. Deiniol of Wales (St. Daniel).  It seems appropriate that he would be on this journey with us to the manger stall where Christ was born as he visited Bethlehem while he was Bishop and Abbot of Bangor in the kingdom of Gwynedd, Wales. 

St. Deiniol founded a monastery on the Menai Strait that he named Bangor, after the wattle fence that surrounded it. His church became a cathedral and it grew into a large diocese. This monastery was founded under the patronage of Maelgwn Gwynedd who endowed it with lands and privileges, later raising it to the rank of the official seat of a bishop, sharing a common boundary with the principality of Gwynedd. Deiniol spent the remainder of his days here as Abbot and Bishop.

You may desire to continue reading more about Deiniol or go on to the Meditation towards the end of this page.

Life of St. Deiniol: We know about St. Deiniol from a Latin Life of Deiniol, preserved in Peniarth MS226 and transcribed in 1602 by Sir Thomas Williams of Trefriw. There was also a poem written in 1527 by Sir David Trevor, parson of Llanallgo, which gives a few extra details of the saint’s life.

Martyrology of TallaghtMartyrology of Tallaght. Part of manuscript separated from the Book of Leinster and housed in the University College, Dublin. photo from wikipedia

The first mention of Deiniol comes from the 9th century Irish Martyrology of Tallaght where he is one of only three Welsh saints to be included showing the importance of his foundations in the pre-Viking period.

He may have been the son of Abbot Dunod Fawr (Dunawd), son of King Pabo Post Prydain, who lost a battle with the king of the Picts. With the defeat, the family lost their land in Southwest Scotland  but were welcomed and given land by the king of Powys, Cyngen ap Cadell. This friendship was sealed when King Pabo’s daughter married a son of King Cyngen.

Deiniol’s possible father, Abbot Dunod Fawr was the founder of the famous Bangor-is-y-coed Monastery (Bangor below the woods) on the River Dee about four miles southeast of Wrexham. It was known to the English as Bancornaburg.  This large monastery was likely located between the present village and the racetrack. Bede in his Ecclesiastical History of the English People spoke of this monastery saying that it was so large that it was divided into seven groups each with their own superior. Bede also records an interesting showdown about 604 at Bangor-is-y-coed between St. Augustine of Canterbury and seven British bishops.

  • Holy Well of St. Deiniol in Penally, Pembrokeshire, Wales                                            Holy Well of St. Deiniol,  Penally, Pembrokeshire, Wales

St. Deiniol’s Calling as Bishop of BangorDeiniol is said to have studied at his father’s monastery and also under the famous teacher Cadoc of Llancarfan. He spent  his early life as a hermit in Pembrokeshire, yet was called to be a bishop despite deficiencies in his formal education. When the bishoporic of Bangor became open, after praying, the people were led by the Spirit to Deiniol who was living in the wilderness. 

Following is the wonderful story of Deiniol’s calling as Bishop of Bangor from the Life of Deiniol:

In course of time, the Cathedral Church of Bangor becoming vacant through the death of its Bishop, those to whom the election or provision of a Bishop in that Church pertained met; the grace of the Holy Spirit was invoked, and it was revealed from heaven that they should send without delay into Pembroke, and choose a certain eremite dwelling on a mountain in the southern part of Pembroke, to be Bishop and pastor of their Church, and it was added that he was named Daniel.

They at once sent messengers to the aforesaid part. The messengers, coming there, found the eremite in the place we named before, and, having first greeted, him, ask him, “What is thy name?” He humbly replied, “I am called Daniel, but am no prophet.” Then the messengers rejoiced with great joy, and told him in detail the object of their journey and arrival there. But he, being incredibly astonished, says, ” How can this be, that you claim me as Bishop-elect, since I have hardly the elements of learning nor any knowledge of letters?” In reply they said, ” It is the will of God that it should be so.” And he, being overcome by their insistence, and wishing to obey the Divine call, left all that he had, and followed them in the name of the Saviour, until they arrived at the entrance of the city of Bangor.

And at once all the bells of the city were rung without the hand of man. But when the people who were in the city heard the sound of the bells they went into the Church, and, finding no one ringing the bells, said to one another that it was a miracle which the Lord had wrought; and immediately, lo, the messengers with Daniel now stood at the Church doors. Then the clergy of that Church, conducting Daniel to the High Altar of the Church, and singing with the utmost fervour the “Te Deum Laudamus,” praised the Saviour’s mercy. And when S. Daniel arose from prayer he was so endowed with all ecclesiastical knowledge that no one in Britain seemed then like him in knowledge and letters.

St. Deiniol attended the Synod of Llanddewi Brefi in Ceredigion, Wales c. 545 or 560 with St. David of Wales when the subject of rules for penance was being discussed. It is also thought to be the synod in which Pelagius (see day 18 of Celts to the Crèche) was declared a heretic postmortem. It was said that the young abbot David spoke so eloquently at this synod that Bishop Dubricius immediately retired and made David the Bishop. Then the first thing David did as a newly consecrated Bishop was to consecrate Deiniol as Bishop of Bangor.

St. Deiniol had a son named St. Deiniol the Younger who succeeded him as Abbot of Bangor. The village of Llanddaniel Fab in Anglesley, eight miles southwest of Bangor is named after St. Deiniol’s son.

Bardsey Island. A view of the ruins of St. Mary's Church Bardsey Island. St. Deiniol was likely buried here. A view of the  ruins of St.  Mary’s Church

Day of Resurrection and Influence: According to the Annales Cambriae (Annals of Wales), Deiniol died in 584 and was buried on Bardsey Island.

St. Deiniol’s Bangor Monastery was destroyed by the Vikings in 1073. All that remains are some geometric carvings on a few stone slabs that can be viewed in the cathedral. But the 14th c. Bangor Cathedral was built upon the church there and became one of Britain’s earliest dioceses.

Bangor Cathedral. East view.

Prime Minister William E. Gladstone dedicated his library in Hawarden, Flintshire, Wales to St. Deiniol. Until recently, the magnificent residential library that was established by Gladstone for “divine learning” was called St. Deiniol’s Library. Today it is called Gladstone’s Library.

Gladstone's Library, formerly known as St. Deiniol's Library. I stayed there for 3 weeks studying in Sept. 2009Gladstone’s Library, formerly known as St. Deiniol’s Library. I stayed there for three weeks studying in September, 2009

On a personal note, I was blessed to receive the Canon Symonds Scholarship to live at Gladstone’s Library and study in her incredible library while on sabbatical from my church in September 2009. For a pastor and former theological library director who loves church history to live in this library, to eat daily gourmet meals, and to be able to use this library at any time day or night was beyond my wildest dreams or imaginations. I am so very grateful to the Warden, Rev. Dr. Peter Francis for allowing me this amazing privilege. It was during this stay that I studied the Celtic and Anglo-Saxon saints that significantly aided in the preparation of this series of Celts to the Crèche: A Celtic 40 Days of Advent Devotional.

Inside the Library of Gladstone's Library. Picture taken Sept. 2009Inside the Library of Gladstone’s Library. Isn’t it stunning? Picture taken September, 2009

The Hawarden church next door to the library is dedicated to St. Deiniol. I worshipped there when I was in residence at Gladstone’s Library. Prime Minister Gladstone and his wife Catherine are buried inside the church.

St. Deiniol's Church, Hawarden. I worshipped in this church when I stayed at Gladstone's Library which is next door. Sept. 2009St. Deiniol’s Church, Hawarden. I worshipped in this church when I stayed at Gladstone’s Library which is next door. September, 2009

Besides Bangor Cathedral there are other churches in Wales and in Brittany, France dedicated to St. Deiniol. There are numerous miracle stories connected to St. Deiniol including one in which he did not have any oxen to plow his fields. A pair of sturdy stags came out of the forest and he put the yoke on them and they plowed his field and then returned to the woods.


Feast Day is September 11

The Nativity at St. Deiniol's Church, Hawarden. Stained glass by Edward B Jones before he died. photo by The Nativity at St. Deiniol’s Church, Hawarden. Stained glass by Edward Burne- Jones before he died. photo by Rosie Miles

The Spirit often works in ways we cannot dream or imagine. The hermit Deiniol never dreamed of being a Bishop of a Cathedral, but like Mary he followed the call upon his life. Deiniol even uttered the same words as Mary, “how can this be?” When God calls us to a place of service in life, may we like Mary and Deiniol answer in the affirmative…it might just be life and history changing.


© Brenda G. Warren and http://www.saintsbridge.org, 2018-2029. Unauthorized use and/or duplication of this material without express and written permission from this site’s author and/or owner is strictly prohibited. Excerpts and links may be used, provided that full and clear credit is given to Brenda G. Warren and http://www.saintsbridge.org (Celts to the Creche) with appropriate and specific direction to the original content.


Some Resources:

Annales Cambriae (Annals of Wales). at Medieval Sourcebook.

Baring-Gould, S.and John Fisher. The Lives of the British Saints: The Saints of Wales and Cornwall and Such Irish Saints as Have Dedications in Britain. from Archive.org.

Bede, The Venerable. Ecclesiastical History of the English People. Book 2

Blair, Peter Hunter. The World of Bede. Cambridge: Cambridge University Press, 1970, 1993 reprint.

Gladstone’s Library, Hawarden, Wales.

Jones, Andrew. Every Pilgrim’s Guide to Celtic Britain and Ireland.

Live in a Library Blog. Gladstone’s Library.  Youtube. April 6, 2017.

The Life of St. Deiniol. Peniarth MS. 225 (1602), p. 155. In the “Celtic Literature Collective website.”

Martyrology of Tallaght. available online at googlebooks.

Rees, Elizabeth. Celtic Saints in Their Landscape. Sutton Publishing, 2000.

___________. Celtic Saints: Passionate Wanderers. New York: Thames and Hudson, 2000.

___________. Celtic Sites and Their Saints: A Guidebook. London: Burns & Oates, 2003.

Short tour of historic St. Deiniol’s Cathedral. Bangor, Wales. April, 2022

St. Deiniol. September 11. National Calendar of Wales.

St. Deiniol’s Church, Hawarden. Historic Wales Guide.

About Brenda

Rev. Warren is an ordained Christian Church (Disciples of Christ) retired Pastor, that still does some preaching. I am married to a wonderful guy with two grown awesome sons; an equally awesome daughter-in-love; adorable grandchildren; and a very large, much-adored Maine Coon cat. I love reading, writing, travel, mountains, and beachcombing. As a former public and theological Library Director, I love doing research that has helped me in composing this Advent devotional, “Celts to the Creche” at www.saintsbridge.org. My research has been enriched by libraries, way too many books and journals purchased, and numerous pilgrimages to the places where these saints lived and worked and had their being. I cannot even begin to express what a great gift it has been to meet like-minded friends along the path who have generously and kindly shared their scholarship, knowledge, and enthusiasm for the Celtic and Anglo-Saxon saints. I often wonder if the saints have in some way been instrumental in introducing me to their friends on both sides of the thin veil.
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