Kidwelly Castle is a Norman castle overlooking the river Gwendraeth and the town of Kidwelly, Carmarthenshire, Wales. The present remains of the castle include work from about 1200 to about 1476. Created as a defence against the Welsh, the castle fell to the Welsh several times in the twelfth century. Later in its history, it was unsuccessfully besieged by forces of Owain Glynd?r in 1403 with assistance from soldiers from France and Brittany who captured Kidwelly town. The castle was relieved by a Norman army after just three weeks. The gatehouse was extensively damaged and it was rebuilt on the instructions of King Henry V. It largely escaped involvement in the English Civil War.