The Norman castle, was founded c.1181 by John de Clahull under the auspices of Hugh de Lacy. The original construct, together with the nine-arched bridge over the River Barrow formed the main landmarks of the town; and the construction of the castle, in itself creating a place of importance has been credited as a key cause in the development of the town of Leighlin-Bridge. In the early 1270s the Carmelites first came to Ireland, and established their first friary in Leighlinbridge, on a site near the castle. The bridge across the river was built c.1320. Another castle, the 'White Castle' was built nearby, c.1408, by Gerald FitzGerald, 5th Earl of Kildare. By 1840 there were no remains of this castle, and its location had been lost. In 1543 the friary was suppressed, and in 1546 Edward Bellingham converted the friary into a fort with a surrounding wall - the fort became a military center for all of Leinster. Bellingham also established a stables at the castle, of around two dozen horses. In 1577 Rory Oge O'More of Laois is said to have captured the castle and destroyed part the town; according to John Ryan in The History and Antiquities of the County of Carlow the castle was not captured and though the skirmish between assailants and defenders came to the gates of the castle it was repelled. During the 1590s O'Neill rebellion the castle was repaired and re-garrisoned for the crown. In 1604 the castle was granted as socage by the king to George Tuchet, Lord Awdeley. During the Irish Rebellion of 1641 the castle was initially garrisoned by the Catholic confederation, and in 1647 and 1649 was used as a rallying point by the Maquis of Ormond. In 1649 the castle was captured by Col. Hewson for the forces of Oliver Cromwell.
Description
In the 1840s the remains of the castle itself consisted of a four sided enclosure wall , approximately thick and enclosed on three sides by a ditch, and on the fourth by the river. The 15th C. keep was situated at the northwestern corner, rectangular in form and nearly tall. By the 1840s the structure was derelict, with only one outer wall remaining, and a single floor of the keep, supported by an arch still standing; there was also the remains of a round tower in the southwest corner - the remains rose to with walls thick. A more modern analysis of the Black Castle classifies it as a three-story limestone tower house, with the lowest story vaulted, with the roof enclosed by walls with mural passageways. Both the tower and the surrounding rectangular bawn have artillery openings, and are architecturally indicative of a 16th-century building.
