Castleisland: Mapped and Measured 180 Years Ago

About the year 1836, a young man named John O’Donovan was despatched by the office of the Ordnance Survey to visit in succession every county in Ireland with the object of noting and recording all existing remains of antiquity:   By the direction of the Ordnance, O’Donovan visited, we may say, every townland in Ireland, […]