Peter (Pierre) de Courtenay, Emperor-elect of Byzantium, Lord of Courtenay, Maruis de Namur and Count of Nevers, Auxerre, and Tonnerre; took part in the Third Crusade 1190, present at Battle of Bouvines 1214 when Philip Augustus of France defeated an army sent by King John of England to reconquer the lands previously held by the Angevins, elected Latin Emperor of Byzantium by the Frankish nobles of that city 1216 and crowned by the Pope in Rome, but captured on his way to the East 1217 by order of Theodore Angelus, Despot of Epirus, and put to death 1219, having never set foot in the city (of Constantinople), let alone reigned there. [Burke's Peerage]