Constantine I, Prince of Armenia

Constantine I or Kostandin I (Armenian: Կոնստանտին; 1035–1040 – c. 1100) was the second lord of Armenian Cilicia (1095 – c. 1100). He ruled the greater part of the Taurus Mountain regions, while managing the towns and lands within his domain. He provided ample provisions to the Crusaders, for example during the difficult period of the siege of Antioch in the winter of 1097. He was a passionate adherent of the separated Armenian Church.