Kostandin I Prince of Armenia

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Prince Ռուբինյան

Armenian: Կոստանդին Ա Ռուբինյան, Հայոց իշխան
Birthplace: 1035-1040/1050-1055
Death: Died in February 24, 1102 – February 23, 1103
Cause of death: The Chronographie of Samuel of Ani records that Constantine died soon after a lightning bolt struck his table in the fortress of Vahka.
Place of Burial: Castalon
Immediate Family:

Son of Rupen I, Prince of Armenia
Husband of N.N.
Father of Thoros I of Armenia; Leo I Prince of Armenia; Daughter of Constantine and Beatrice d'Arménie
Brother of Thoros

Occupation: Prince of Armenia
Managed by: Douglas John Nimmo
Last Updated:

About Kostandin I Prince of Armenia


Constantine I or Kostandin I (1035–1040 / 1050–1055 – c. 1100 / February 24, 1102 – February 23, 1103) was the second lord of Armenian Cilicia or “Lord of the Mountains” (1095 – c. 1100 / 1102 / 1103). During his rule, he controlled the greater part of the regions around the Taurus Mountains, and invested much of his efforts in cultivating the lands and rebuilding the towns 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.

Early years

He was the son of Roupen I; his father declared the independence of Cilicia from the Byzantine Empire around 1080. According to the chroniclers Matthew of Edessa and Sempat Sparapet, Constantine is also identified as being either a prince of King Gagik II, or some kind of a military commander in the monarch’s clan in exile.

Upon the murder of King Gagik II, Constantine’s father gathered his family and fled to the Taurus Mountains and took refuge in the fortress of Kopitar (Kosidar) situated north of Sis (today Kozan in Turkey). As Roupen was growing old by 1090, his command seems to have passed entirely to Constantine; and it was the latter who in the same year conquered the strategic Cilician castle of Vahka (today Feke in Turkey). The mastery of this mountain defile made possible the assessment of taxes on merchandise transported from the port of Ayas towards the central part of Asia Minor, a source of wealth to which the Roupenians owed their power.

His rule

After his father’s death in 1095, Constantine extended his power eastward towards the Anti-Taurus Mountains. He, in his capacity as an Armenian Christian ruler in the Levant, helped the forces of the First Crusade maintain the siege of Antioch until it fell to the crusaders. The crusaders, for their part, duly appreciated the aid of their Armenian allies: Constantin was honored with the titles of Comes and Baron.

The Chronographie of Samuel of Ani records that Constantine died soon after a lightning bolt struck his table in the fortress of Vahka. He was buried in Castalon.

Marriage and children

According to the Chronicle of Aleppo, his wife was descended from Bardas Phokas.

Beatrice (? – before 1118), the wife of Count Joscelin I of Edessa

Thoros I, Lord of Armenian Cilicia (? – February 17, 1129 / February 16, 1130)

Leo I, Lord of Armenian Cilicia (? – Constantinople, February 14, 1140) daughter, married Gabriel of Melitene


Constantine I, Prince of Armenia

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Kostandin I Prince of Armenia's Timeline

Age 50
February 24, 1102
Age 52
February 24, 1102 – February 23, 1103