Constantine III was the King of Armenian Cilicia

Armenian Kingdom of Cilicia

The Armenian Kingdom of Cilicia , also known as the Cilician Armenia, Kingdom of Cilician Armenia or New Armenia, was an independent principality formed during the High Middle Ages by Armenian refugees fleeing the Seljuk invasion of Armenia...

 from 1344 to 1362. He was the son of Baldwin, Lord of Neghir, a nephew of Hethum I of Armenia

Hethum I of Armenia

Hethum I ruled the Armenian Kingdom of Cilicia from 1226 to 1270. He was the son of Constantine, Lord of Baberon and Partzapert and was the founder of the dynasty which bears his name: the Hetoumids...

, and a distant cousin of Constantine II

Constantine II of Armenia

Constantine II , also Kostandin II, was the fourth lord of Armenian Cilicia or “Lord of the Mountains” ....

.

When Constantine II was killed in an uprising in 1344, Constantine III succeeded him. He attempted to wipe out all rival claimants to the throne; he gave orders to kill Constantine II's nephews, Bemon and Leo

Leo VI of Armenia

Leo V or Levon V , of the House of Lusignan, was the last Latin king of the Armenian Kingdom of Cilicia...

, but before the murder could be carried out they escaped to Cyprus

Cyprus

Cyprus , officially the Republic of Cyprus , is a Eurasian island country, member of the European Union, in the Eastern Mediterranean, east of Greece, south of Turkey, west of Syria and north of Egypt. It is the third largest island in the Mediterranean Sea.The earliest known human activity on the...

.

Constantine was the first husband of Maria

Marie of Armenia

Marie of Korikos was the daughter of Oshin of Corycos and his second Jeanne of Anjou. She was Queen consort of Armenia by her first two marriages. She was a member of the House of Neghir and House of Lusignan.- Family:...

, daughter of Oshin of Corycos and Jeanne of Anjou

Jeanne of Anjou

Joan of Anjou was a daughter of Philip I, Prince of Taranto and his first wife Thamar Angelina Komnene. She was Queen consort of Armenia by her first marriage...

. He was predeceased by his two sons. Upon his death from natural causes he was succeeded by his cousin Constantine IV

Constantine VI of Armenia

Constantine IV was the King of Armenian Cilicia from 1362 until his death. He was the son of Hethum of Neghir, a nephew of Hethum II of Armenia. Constantine came to the throne on the death of his cousin Constantine III, whose widow, Maria, daughter of Oshin of Corycos, he married...

.