The Barony of Iverk consists of 41,369 acres. It contains the townslands of Aglish, Arderra, Ballytarsney, Clonmore, Fiddown, Kilmacow, Muckalee, Owning, Pollrone, Portnascully, Rathkiernan, Tybroughney, Tubrid, Ullid and Whitechurch, which make up the present day parishes of Piltown, Mooncoin and part of Kilmacow.

Most of the southern half is fertile land. The upper portion is hilly sandstone land rising to a height of 1,034 ft. at Carrigtris in Mullinbeg townland on the western ridge of the Walshe Mountains. Lecky, the historian, referred to the lower portion of the Barony as a fertile land and a virile people.
The upper portion of the Barony contains the greater number of our megalithic remains, denoting a very early hill-settlement of which little is known, while the southern portion is preeminently the hamlet or old village centre of which there are 36 in number. Paths are numerous and ruined ancient churches and Norman castles dot the area.

There is a lot of history attached to the Barony going back to the earlier centuries. A famous battle took place in Piltown in 1462. It began at the tower in Rogerstown and ended in Ardclone.
Handed down by tradition, human bones have been frequently dug out. Tybroughney Castle, which was later the home of our past Chairmen, Louis and Robert Dowley, was built in 1185 by Prince John who later became King of England.

Kildalton College, now the headquarters of ACOT, and originally the home of the Dalton family who were dispossessed by Cromwell in 1649 and the estate was handed over to Ponsonby in recognition of his services. His successors as Earls of Bassborough were on the whole benevolent despots and treated their tenants fairly. "The Barony Meeting" was staged on the grounds from 1850 to 1938.

In the Mooncoin area of the Barony many traces of the past can be seen with ruins of old castles and churches. The name Mooncoin (Mom Chaldhn) it is said came originally from a lady called Coyne Grant, whose family were property owners in the area prior to the Cromwellian invasion and then were dispossessed and dispatched to Connaught. It is generally accepted now that Mooncoin is the Anglicized form of Mom Chuinn or Quinn's Bog.

There was a castle built in Dournane by the Ormonde family in former times and later the village pump was built on its ruins.

Arderra Castle stood on the outskirts of the village until 1820 when it was accidentally burned down. Luffany, a part of the barony is famous for the families of Doyles and Dunphys prominent in church appointments and renowned in the hurling fields of Mooncoin in the past.

Ballytarsney, townsland of present Chairman Tommy Kinsella had a castle built there in earlier centuries by Ormond family and its also the birthplace of Fr. James Dollars, a well known poet of the past.
Grannagh, which is part of Kilmacow parish has a famous landmark in its castle, which goes back to the 14th centuries and it was the home of the Ormond family for several centuries.