Constantine appears as one of the Armenian leaders who took control of parts of the realm of Philaretos Brachamios after his death.
[1] It seems that Constantine had one brother called Dawt'ouk (mentioned in the chronicles as Taphnuz, Taftoc or Tabtoug).
[2] In February 1098, Constantine accompanied Baldwin of Boulogne, who had recently arrived in Edessa to protect the townspeople, on a campaign against Balduk of Samosata.
[2] After a ploy of Vasil Dgha, ruler of Kaysun and Raban, to ally with the Turks had failed, the new count of Edessa, Baldwin II decided to suppress the remaining Armenian principalities in the Euphrates Valley.
[4] His son Michael reigned in Gargar until 1122 when the city passed into Frankish hands when he was not longer able to protect it against the Turks.