Rhidian

Saint Rhidian (called in Breton sources also Therezien or Terethianus) is a saint of Welsh origin, patron of the church of Llanrhidian on the Gower peninsula near Swansea in Glamorgan. The name is of old Brittonic origin: Rhidian comes from a form like Rectugenos, "of legitimate race", and other forms are Ritgen, Rithian. In Latin it appears as Terethianus in the cartulary of Quimperlé and as Tiritianus in the necrology of Landévennec abbey.

The Gower peninsula keeps the memory of many early Celtic saints, among them Teilo, Illtud, Madoc, Cenydd, Rhidian and Gwynour. The church of Llanrhidian is dedicated jointly to Rhidian and Illtud, which shows that the two were close. Rhidian is also remembered as a disciple of another local saint, Cennydd, founder of a monastic school. Our sources give no date of death or feast day.