Dyfodwg, or Tyfodwg, was a 6th-century Welsh saint. He is one of the three saints (with Illtyd and

Gwynno Gwynno, or Gwynnog ab Gildas, is the name of a 6th-century Celtic Christianity, Welsh saint. Archives at the Vatican City, Vatican record that his festival is 26 October; that he is regarded as a confessor; and that there is said to be a sacred w ...

) from whom the ancient parish of Llantrisant takes its name, and possibly the patron (believed to have been Tyfodwg son of Gwilfyw) of the parish church of Llandyfodwg in Glynogwr, between Blackmill and Gilfach Goch in

Bridgend Bridgend (; or just , meaning "the end of the bridge on the Ogmore") is a town in the Bridgend County Borough of Wales, west of Cardiff and east of Swansea. The town is named after the Old Bridge, Bridgend, medieval bridge over the River Og ...

, and gave his name to the ancient parish of Ystradyfodwg. Some records state Dyfodwg was a Breton monk, while others that he was born within the

Glamorgan Glamorgan (), or sometimes Glamorganshire ( or ), was Historic counties of Wales, one of the thirteen counties of Wales that existed from 1536 until their abolishment in 1974. It is located in the South Wales, south of Wales. Originally an ea ...

area. Iolo Morgannwg states that Dyfodwg founded a church at Ystradyfodwg (''The vale of Tyfodwg'') and was a disciple of Illtyd at Llantwit Major. However, there is no record of any church being dedicated to him in Ystradyfodwg itself (the parish church is dedicated to Saint John), leading some to suggest that the parish was named, not for a saint, but a local chieftain. One legend records that Tyfodwg was a chieftain promised sainthood by the monks at Penrhys. According to Rice Rees Tyfodwg was one of the associates of Cadfan (presumably Saint Cadfan), though the family line in the Cambrian Biography, is inconsistent with known chronology.An Essay on the Welsh Saints, or the Primitive Christians usually considered to have been the founders of churches in Wales.
Revd Rice Rees, Longman &c., 1836. His patronal feast is kept on 25 June.Parish Website for St Tyfodwg's Church
accessed 19 November 2011

References

{{Authority control Medieval Welsh saints People from Glamorgan Southwestern Brythonic saints 6th-century Christian saints