"Cf. Acres, p: Kiltoghert, b: Leitrim Na hAcraí Acres, p: Mohill, b: Mohill Na hAcraí "

"Pinkman: Na h-Acraí = The Acres. Acres is the English for the Irish plural of Acra, an acre, a division of land. Acra does not seem to be of Irish origin; it is likely a substitute for some older form. Keating says that “the acre of Irish measure is twice or thrice greater than the acre of the present foreign measure.” Which was, in turn, greater than the statute acre in the ration 196:121. The Irish acre seems to have varied in extent, depending on the nature of the soil and the quantity of livestock that it could support. We may infer as much from the expression “Twice or thrice greater.” "