Cynbryd

Saint Cynbryd the Martyr is a Welsh saint of the undivided Church. He is said to have been one of the many sons of Brychan Brycheiniog, but his name does not occur in either version of the Cognatio.

According to late accounts he was a saint at Llanddulas, on the coast of Denbighshire, and was slain by the unbelieving Saxons at Bwlch Cynbryd, "his pass". The church of Llanddulas, sometimes called Llangynbryd, would therefore be a martyrium rather than his own foundation. His brother Cynfran is the patron of the neighbouring church of Llysfaen.

His festival is 19 March in a good number of Welsh calendars; two sixteenth-⁠century manuscripts enter it by mistake against the 20th. Browne Willis says the wake at Llanddulas was kept on the first Sunday in September. In 1547 William Salesbury gave Cynbryd as the Welsh form of the name Cuthbert, perhaps because Cuthbert's day falls on 20 March, and for this reason Baring-⁠Gould suspects a dedication of the church to Cuthbert.