Saint Teulyddog (; and ''Thelaucus'') was a medieval Welsh saint.Breverton, T.D. ''The Book of Welsh Saints''. Glyndwr Publications, 2000. Accounted a disciple of Saint

Dubricius Dubricius or Dubric (; Norman-French: ''Devereux''; c. 465 – c. 550) was a 6th-century British ecclesiastic venerated as a saint. He was the evangelist of Ergyng () (later Archenfield, Herefordshire) and much of south-east Wales. ...

, Teulyddog is said to have fled with many others to

Brittany Brittany ( ) is a peninsula, historical country and cultural area in the north-west of modern France, covering the western part of what was known as Armorica in Roman Gaul. It became an Kingdom of Brittany, independent kingdom and then a Duch ...

during the Yellow Plague of Rhos (''y Fad Felen'') in the 540s. Returning to Wales, he associated himself with

Saint Teilo Saint Teilo ( or '; Wainewright, John. in ''The Catholic Encyclopedia'', Vol. XIV. Robert Appleton Co. (New York), 1912. Accessed 20 July 2013. or '; or '; – 9 February ), also known as Eliud, was a British Christian monk, bish ...

Baring-Gould, Sabine & al. ''The Lives of the British Saints'', Vol. 4
p. 251 f
Kessinger Publishing, 2005. Accessed 26 Mar 2013. and was credited with the establishment of the clas (ecclesiastical settlement) in

Carmarthen Carmarthen (, ; , 'Merlin's fort' or possibly 'Sea-town fort') is the county town of Carmarthenshire and a community (Wales), community in Wales, lying on the River Towy north of its estuary in Carmarthen Bay. At the 2021 United Kingdom cen ...

, which took its medieval name, ''Llan Teulyddog'', in his honor. Following the

Norman invasion of Wales The Norman invasion of Wales began shortly after the Norman Conquest, Norman conquest of England under William the Conqueror, who believed England to be his birthright. Initially (1067–1081), the invasion of Wales was not undertaken with the fer ...

, his patronage of the town was assumed by

John the Evangelist John the Evangelist ( – ) is the name traditionally given to the author of the Gospel of John. Christians have traditionally identified him with John the Apostle, John of Patmos, and John the Presbyter, although there is no consensus on how ...

, though the dedication of the Benedictine Abbey (later an Augustinian priory) remained under the joint dedication of Teulyddog and St John.

References

6th-century Welsh bishops 6th-century Christian saints Medieval Welsh saints History of Pembrokeshire People from Pembrokeshire {{wales-hist-stub