Brenainn of Eatarcluain

Saint Brenainn of Eatarcluain is an Irish saint of the undivided Church, remembered in the old martyrologies of Ireland.

The Martyrology of Donegal, compiled in 1630 from older sources, commemorates him on 13 December. 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.

The sources consulted record nothing more about him.