Edward II of Caernarvon, King of England
Reigned 1307-1327 deposed and murdered. 1st Prince of Wales. His reign was troubled by extravagances, his militarist disasters in Scotland, notably at Bannockburn (1314), and unpopularity of his favourite peers,
Gaveston who died in 1312 and Hugh le Despencer 1262-1326. He was deposed on 21 Jan 1327, and murdered by a red-hot poker in his bowels. Invested as the first English Prince of Wales in 1301.
Isabella de France
Other sources say she dies at Hereford Castle!