Nennus

Saint Nennus (also called Nem Moccu Birn, Nenus or Nehemias) was abbot of the monastery of the Aran Islands in Ireland and reposed on 14 June 654. He is one of the few known successors of Saint Enda of Aran and appears to be the first abbot of Aran named in the Irish annals after Enda himself. The calendar calls him abbot of the monasteries of the Isles of Arran and Bute.

The name "moccu Birn" shows that he was descended from Loegaire Birn Buadach, an early king of Ossory, of the Dál Birn lineage. The Martyrology of Óengus calls him a relation of Saint Ciarán of Saigir and says that he had three names: Nem, Pupu and Cáilbe. The Annals of the Four Masters record his death in 654. He is commemorated on 14 June as a saint of the West before the Great Schism (a saint of the undivided Church), by the New Calendar.