ardiff Castle was originally a Roman fort. The Normans created a motte and bailey style castle on the same site in around 1080 or 1090. Robert Fitzhamon was responsible for the castle's construction at this time. Robert Curthose was captured by his elder brother, Henry I King of England, and imprisoned at Cardiff Castle where he died in 1134. In 1158 the Welsh leader Ifor Bach attacked the castle and kidnapped William Fitzcount, the Lord of Glamorgan, along with his family. Ifor Bach demanded the return of land that had been taken from him before releasing the Lord. The wooden castle was replaced with stone by Robert the Consul during the twelfth century. Robert built a shell keep at the top of the motte which still survives. The de Clare family had control of the castle during the thirteenth century and under the leadership of Gilbert de Clare improved the defences ever further. The Despenser family took control of the castle in early years of the fourteenth century. It was during this period that the castle was attacked by the Welsh in the uprising led by Owain Glyndwr. Later the Earls of Warwick took ownership of the castle..