Leo IV of Armenia

Leo IV (1309–1341), son of King Oshin, was the last Hethumid king of Armenian Cilicia. He came to the throne in 1320 under the regency of Oshin of Corycos, who in 1321 forced him to marry his daughter Alice and killed several royals.

In 1329 Leo answered in kind: Oshin, Oshin's brother Constantine and Alice were killed, Oshin's head sent to the Il-Khan and Constantine's to the Mamluk sultan. His pro-Western policy and 1331 marriage to Constance of Sicily enraged the barons.

After the Mamluks took Ayas in 1337 he bought a humiliating truce with territory and a large indemnity, and spent his last years in the citadel at Sis waiting for Western aid that never came. His barons murdered him on 28 August 1341 and chose his cousin Constantine II as successor.