Translation according to P. W. Joyce:
Carrowneany in Galway; C.-n-aonaigh, of the fair. See Aenach, a fair, vol. i. p. 205 [reproduced below].
In modern times and in the present spoken language, the word aenach is always applied to a cattle fair. It is pretty certain that in some cases the present cattle fairs are the representatives of the ancient popular assemblies, which have continued uninterruptedly from age to age, gradually changing their purposes to suit the requirements of each succeeding generation. This we find in the case of Nenagh in Tipperary, which is still celebrated for its great fairs. Its most ancient name was Aenach-Thete; and it was afterwards called - and is still universally called by speakers of Irish - Aenach-Urmhumhan [Enagh-Urooan], the assembly or assembly-place of Urmhumhan or Ormond, which indicates that it was at one time the chief meeting-place for the tribes of east Munster. The present name is formerd by the attraction of the article 'n to Aenach, viz., nAenach i.e. the fair, which is exactly represented in pronunciation by Nenagh (see p. 24). This word forms a great number of names, and in every case it indicates that a fair war formerly held in the place, though in most instances these fairs have been long discontinued, or transferred to other localities. The usual forms in modern names are -eeny, -eena, -enagh, and in Cork and Kerry, -eanig. Monasteranenagh in Limerick, where the fine ruins of the monastery founded by the king of Thomond in the twelfth century, still remain, is called by the Four Masters, Mainister-an-aenaigh, the monastery of the fair. But the fair was held there long before the foundation of the monastery, and down to that time the place was called Aenach-beag (Four Mast.), i.e. little fair, probably to distinguish it from the great fair of Nenagh. The simple word Enagh is the name of about twenty townlands in different counties, extending from Antrim to Cork; but in some cases especially in Ulster, this word may represent eanach, a marsh. The Irish name for Enagh, in the parish of Clonlea, county Clare, is Aenagh-O'bhFloinn, the fair or fair-green of the O'Flynns…