Konstantinos Kalamanos

Constantine Kalamanos or Coloman (; 1137/1145 – after 1173) also referred to as Doux of Cilcia, was a Byzantine general and governor of Cilicia.

Constantine was the eldest son of Boris Calamanos (pretender to the throne of the Kingdom of Hungary) and Areta Doukaina.

Military career In 1163, Emperor Manuel I Komnenos appointed Constantine governor of Cilicia, a province of the empire, whose fortresses had just been captured by the Armenian prince Thoros II. However, when he arrived in Cilicia, Prince Thoros withdrew to the mountains. Princess Constance of Antioch, wishing to retain power for her son, Bohemond III of Antioch, appealed to Constantine for military assistance. However, as soon as the appeal was heard, he caused a revolt in Antioch and was exiled.

Shortly afterwards, Constantine and Bohemond III lost their armies to Nur ad-Din Zengi's army after the siege of Krak des Chevaliers, a fortress in the County of Tripoli. After a short battle in which Constantine and his troops distinguished themselves, Nur ad-Din Zengi fled to Homs. In 1170, Prince Mleh of Armenia invaded the Byzantine province of Cilicia with the help of Nur ad-Din Zengi, and took Mopsuestia, Adana, and Tarsus. Although Constantine could have regained the lost territories with the help of King Amalric I of Jerusalem and Prince Bohemond III, he did not do so and was captured by Prince Mleh a year later.