Fidhmuine of Raithin

Saint Fidhmuine of Raithin is an Irish saint of the undivided Church, remembered in the old martyrologies of Ireland as an anchorite.

The Donegal text calls him Fidhmuine, also known as Ua Suanaigh, an anchorite of Raithin and of Inis Baithin in the east of Leinster, and sets the year 756 beside his name. He was the son of Cuduilech, of the race of Dathi, son of Fiachra, and his mother was Ferbla, daughter of Dioma Dubh.

The Martyrology of Donegal, compiled in 1630 from older sources, commemorates him on 16 May. The Martyrology of Tallaght, from the early ninth century, lists a similar name on the same day. The date is that of the old Irish calendar, that is, in the old style.