Constantine IV of Armenia

Constantine IV (1324–1373), son of Hethum of Neghir, inherited the throne of Armenian Cilicia in December 1362 from his cousin Constantine III, whose widow Maria, daughter of Oshin of Corycos, he married. The Mamluks had already taken Ajazzo, Tarsus and Adana.

He allied with Peter I of Cyprus and gave him Corycus; after Peter's death in 1369 he turned to the sultan and sought a treaty. His barons feared annexation and murdered him in March 1373. His cousin Leo V, of the Poitiers-Lusignan line, succeeded and became the last king of Armenian Cilicia.