The castle as we see it today dates from the years after the Earldom of Pembroke was created in 1138 when the first Earl, Gilbert de Clare, decided to extend and improve the fortress. Gilbert's ...

Support for Llywelyn in northern Glamorgan alarmed Gilbert de Clare, the powerful Lord of Glamorgan, who built Caerphilly Castle to thwart the Prince's ambitions The principality of Wales ruled by ...

He was born in 1222, a son of Gilbert de Clare, Earl of Gloucester and Hertford and his wife Isabel (Marshal). As a child he was a ward of Hubert de Burgh and heir to great estates in England.