Charles Edward, Prince, grandson ofJames II, King of England, 1720-1788

Known as "Bonnie Prince Charlie" by his supporters and "The Young Pretender" by detractors, Charles Edward Stuart was raised in exile after his grandfather, James II, was deposed from the British throne for his ambitions to return England to the Catholic faith. Prince Charles Edward mounted the Jacobite Uprising from Scotland in an effort to reclaim the throne for the Stuart royal line.

Charles VI, King of France, 1368-1422

First referred to as "the Beloved" and later "the Mad," Charles VI ascended to the throne at the age of eleven and increasingly suffered from psychotic episodes that rendered him an ineffectual ruler. Although Charles signed the Treaty of Troyes shortly after the French defeat at the Battle of Agincourt, making his future son-in-law Henry V heir to the French throne, Henry died shortly before Charles, leading to the French re-entering the Hundred Years' War and earning victory for the French House of Valois.