County Carlow
(Ceatharlach in Irish, meaning "four-part lake") is an inland town in the south-east of Ireland in County Carlow, 84 km from Dublin. The River Barrow flows through the town. The town numbers about 20,000 people - 3,000 of whom are students. The Carlow area has been settled for thousands of years. St Mullins monastery is believed to have been established in the vicinity in the 7th century. 1180 saw the construction of Carlow Castle by William the Marshall, Earl of Pembroke and Lord of Leinster to guard the vital river crossing. Over the following centuries many other historic buildings were erected. Ballyloughan Castle, Ballymoon Castle, Leighlinbridge Castle and Tower House were all built in the 14th century.
Based on an article on Carlow from Ireland Information Guide