Riagat

Riagat is a Breton saint, patron of the commune of Treffiagat-⁠Léchiagat, in the Pays Bigouden. The parish church of Treffiagat is called Saint-⁠Riagat, and in it stands a modern statue of the saint as a bishop. His commemoration is on 21 June, and on 30 June a pardon is held every year in his honour. The name of the place comes from "Tref Riagat", attested in 1351.

The saint is known only in Brittany. His name appears as "Riacate", in the Latin vocative, in a litany published by Jean Mabillon, from a manuscript of an abbey of Reims that Mabillon dated to the 8th century. In traditional hagiography he is an Irish abbot of the 5th century who took refuge in Armorica with his monks. But Léon Fleuriot and other modern scholars identify him with Riochatus, a Breton monk in Gaul in the second half of the 5th century, mentioned by Sidonius Apollinaris in a letter. Venerated locally, from the time of the undivided Church.