Castletown, County Laois

The older Irish name for the village was Baile Chaisleáin Ua bhFoirchealláin (meaning "castle-town of Uí Fhoirchealláin"). This has been anglicised as Ballycashlan-Offerillan and Ballycaslane-Offeralane. Uí Fhoirchealláin is the name of the parish and was added to distinguish it from another Castletown.^[2]

According to an extract from A Topographical Dictionary of Ireland, published in 1837 by Samuel Lewis, Castletown was then "a village in the Parish of Offerlane, barony of Upper Ossory, Queen's county, and province of Leinster, 13⁄4 miles (S.by W.) from Mountrath; containing 367 inhabitants. It takes its name from an ancient castle, occupying a commanding situation on the bank of the River Nore, and which, in the early part of the 16th century, was garrisoned by Sir Oliver Norris, son-in-law of the Earl of Ormonde, with a view to curb the power of the Fitzpatricks, to whom it was afterwards relinquished". The extract continues "the village is pleasantly situated on the river Nore, and on the road from Dublin to Limerick, it contains 59 houses, many of which are good residences, and the whole has an appearance of neatness and respectability".^[3]

Gash Gardens and the De La Salle Brothers monastery which has been in the village since 1881.

Castletown is known as "The Tidiest Village in Laois".^{[citation needed]} Chairman of the Tidy Towns committee is Seán Fleming, TD. In 1998, Castletown were just four points behind the national winner.^{[citation needed]} The village won the overall Irish Tidy Towns Competition in 2002.^[4]

There are three national schools in the parish: Castletown Primary School, Paddock National School and Rushall National School. The nearest secondary school is Mountrath Community School.^{[citation needed]}

Castletown has a Gaelic Athletic Association (GAA) club called Castletown GAA, while another club in the parish is called Slieve Bloom GAA. There is also a camogie club called Naomh Éamann Camogie Club.^{[citation needed]}