Clydog (also known as Clydawg, Clodock, Clitaucus, Cleodicus, Cladocus) was a sixth-century Welsh king of Ergyng who became a saint.
[5] Clydog was a member of the clan of the legendary king Brychan, whose children and grandchildren became the famed saints of Cornwall and Wales.
Although some sources say he conquered the whole of South Wales, which is unlikely, but it is possible that he was at one time also king of Ceredigion and Dyfed along with his brother Dedyw.
[1] Some sources label Clydog a martyr, being a Christian killed by an outsider, but this is probably a mistranslation of the word merthyr (shrine).
St Clydawg's church now covers the parish of Clodock, which was transferred from Wales to England in 1535.