In 1317 Edward II settled the inheritance of Glamorgan and Caerphilly Castle on Eleanor de Clare, who had married the royal favourite, Hugh le Despenser. Hugh used his relationship with the king to expand his power across the region, taking over lands throughout South Wales. Hugh employed Master Thomas de la Bataile and William Hurley to expand the Great Hall at the castle, including richly carved windows and doors. In 1326, however, Edward's wife, Isabella of France, overthrew his government, forcing the king and Hugh to flee west. The pair stayed in Caerphilly Castle at the end of October and early November, before leaving to escape Isabella's approaching forces, abandoning the extensive stores and £14,000 held at the castle. William la Zouche besieged the castle with a force of 425 soldiers, cornering the constable, Sir John de Felton, Hugh's son – also called Hugh – and the garrison of 130 men inside. Caerphilly held out until March 1327, when the garrison surrendered on the condition that the younger Hugh was pardoned, his father having been already executed.