Aberystwyth Castle (Welsh: Castell Aberystwyth) is a Grade I listed Edwardian fortress located in Aberystwyth, Ceredigion, Mid Wales. It was built in response to the First Welsh War in the late 13th century, replacing an earlier fortress located a mile to the south. During a national uprising by Owain Glyndŵr, the Welsh captured the castle in 1404, but it was recaptured by the English four years later. From 1637 it housed a Royal mint of Charles I, which minted coins from locally mined silver. The castle was slighted by Oliver Cromwell in 1649.
Marcher lord Gilbert de Clare built an earlier motte and bailey castle a mile south of the current site in around 1110. In 1116 it was unsuccessfully besieged by Gruffydd ap Rhys, King of Deheubarth. He was eventually successful in 1136, capturing it and burning it to the ground with the help of Owain Gwynedd and his brother, Cadwaladr ap Gruffydd, the sons of Gruffudd ap Cynan, King of Gwynedd. Their sister, Gwenllian ferch Gruffydd, Gruffydd ap Rhys's wife, had been killed in battle by Gruffudd ab Llywelyn, who commanded for the Norman, Maurice de Londres. She had taken a force to meet him in battle at Kidwelly. Owain Gwynedd gave the castle to Cadwaladr to rebuild, but in 1143, Cadwaladr was implicated in the murder of Anarawd ap Gruffydd, the new king of Deheubarth. Owain Gwynedd sent his son, Hywel, to strip Cadwaladr of his lands in Ceredigion, and the castle was burned. It was rebuilt and later reinforced with timber and stone revetment and stone footings. After a succession of at least three owners, it was taken by Welsh prince Llywelyn the Great in 1221.
The current castle, as well as a new town, was built in a new location to the north, the current site, by Edward I of England. Construction began in 1277 after the end of the first war against Llywelyn ap Gruffydd, Llywelyn the Great's grandson. Work on the castle was initially slow, and at the start of the 1282 war, the Welsh took and burned both the castle and the town. Probably under master mason James of St George, the castle was eventually completed in 1289 at a cost of £4,000. It was besieged extensively during the revolt of Madog ap Llywelyn in 1294–5 but held out because it could be supplied by sea from Ireland.
The adjoining walled town took its name from the older and important nearby village of Llanbadarn Fawr, and was thus called Llanbadarn Gaerog (English: Fortified Llanbadarn). However, by the time of the Black Prince in 1343, the castle was in a bad state of disrepair; the main gateway and drawbridges, the king's hall and long chamber, the kitchen range, and the outer bailey were falling down.
In 1404, Owain Glyndŵr captured and took possession of the castle during a national uprising against English occupation. It became a seat of government and in 1405, a treaty was signed between Glyndŵr and the King of France at the castle. Four years later, it was retaken by the English. In 1637 Thomas Bushell prevailed upon Charles I to establish a Royal mint in Aberystwyth, sited in the castle hall. This was authorised to mint the half-crown, shilling, half-shilling, two-pence, penny, groat, threepence, and half-penny coins, from silver that was mined locally in Ceredigion.
The mint's operator raised a regiment of Royalist soldiers during the English Civil War, and the mint ceased operations in September of 1642, when Charles I issued the Wellington Declaration and Bushell seems to have removed bullion and equipment to Shrewsbury, and operations were diverted to Oxford. Oliver Cromwell's forces took the castle in 1646[9] and the castle was slighted in 1649.
