Edward II of England
Edward II (1284–1327), Edward of Caernarfon, succeeded his father Edward I in 1307 and in 1308 married Isabella, daughter of Philip IV of France. Barons led by his cousin Thomas of Lancaster killed his favourite Piers Gaveston in 1312. In 1314 Robert the Bruce routed him at Bannockburn, ending English hopes in Scotland.
He later ruled through the Despenser family and executed Lancaster in 1322. In 1326 Isabella and her lover Roger Mortimer invaded and forced him to abdicate in January 1327 in favour of his son Edward III. He died that year at Berkeley Castle, probably murdered on the orders of the new regime.