John of Poitiers-Lusignan
John of Poitiers-Lusignan was constable and later regent of the Armenian Kingdom of Cilicia.
He was son of Amalric, Prince of Tyre, and Isabella of Armenia. His siblings were Guy and Agnes, wife of Leo III, King of Armenia.
He married Soldane Bagrationi, daughter of king George V of Georgia. The couple had a son:
John was murdered in Cilicia on 7 August 1343.