Dyfan

Saint Dyfan is a highly obscure figure, presumed to be the namesake of Merthyr Dyfan ("Dyfan's martyrium") in Glamorgan in south-⁠east Wales. He is sometimes styled the protomartyr of Wales, and the erection of his martyrium is credited to Saint Teilo in the sixth century. In the nineteenth century Edward Williams (Iolo Morganwg) confused him with Saint Deruvian of the legend of the baptism of King Lucius of Britain; his forgeries have been exposed and the link is rejected. According to Baring-⁠Gould, his history in the form given by those documents is a fabrication, and the church of Merthyr Dyfan was only a peg on which to hang the story.

His traditional commemoration is on 24 May.