Sempad the Constable was a noble from Cilician Armenia. He was an older brother of King Hetoum I. He was an important figure in Cilicia, acting as a diplomat, judge, and military officer, holding the
A 14th century copy of the February 7, 1248, letter of Sempad to Henry I of Cyprus and John of Ibelin, stating that "If God hadn't brought the Tartars who then massacred the pagans, they [the Sarasins] would have been able to invade the whole land as far as the sea." The letter was also shown to Louis IX.
The Mamluks killed one of Hetoum I's sons (fallen, right) and captured another (the future king Leo II, middle).