Hethum I of Armenia

Hethum I (1213–1270) founded the Hethumid dynasty of Cilician Armenia. His father, Constantine of Baberon, was regent for Queen Isabella and arranged the removal of her first husband Philip. In 1226 Constantine forced Isabella to marry Hethum, making them co-rulers.

Hethum accepted Mongol suzerainty, and in 1254–1255 travelled through Central Asia to the Great Khan's court at Karakorum. He joined the Mongols in war against the Mamluks, who in 1266 killed his son Thoros at the Battle of Mari. In 1270 he abdicated in favour of his son Leo and died on 21 October.