1901 & 1911 Census Returns.
18th & 19th Century Census Substitutes.
A Barony is an important county subdivision. It is thought to be a Norman division although its precise origin is unknown. There are generally between seven and ten baronies per county although Cork has twenty and Louth has only four. A barony can occupy parts of two counties in which case it is referred to as a half barony. There are 331 baronies in Ireland. Baronies are no longer used for local government.