Ó hIonmhaineáin
Ó hIONMHAINEÁIN—I—O Hununane, O Hinownan, Nunan, Noonan; 'descendant of Ionmhaineán' (diminutive of Ionmhain, beloved); now shortened to Ó Nuanáin; the name of an ecclesiastical family who were erenaghs of the church of St. Beretchert at Tullylease, in the north-west of Co. Cork, and are now numerous in Cork, Limerick, Tipperary and Clare. The Four Masters at the year 1230 record the death of Donnshléibhe Ua hIonmhaineáin a holy monk of Boyle.
Alphabetical Index to Irish Surnames