About Leo I, Prince of Armenia
Lived 1100 – 1140. Leo I, Prince of Armenia was a monarch.
Leo I , also Levon I or Leon I, (unknown – Constantinople, February 14, 1140) was the fifth lord of Armenian Cilicia
Leo was captured after being invited to a meeting by the Byzantine Emperor John II Comnenus, who had sworn a false promise of peace.
Early life Leo's father was Constantine I, lord of Armenian Cilicia.
After the death of Constantine I, Leo's brother Thoros I became the ruler.
Rule
Other authors (e.g., Jacob G. Ghazarian, Vahan M. Kurkjian) suggest that Thoros I was directly succeeded by Leo.
The (re-)occupation of Cilicia by the Byzantines Eventually, John invited Leo to a meeting under a false promise of peace, where the prince was captured. Leo and two of his sons, Roupen and Thoros, were subsequently taken prisoner.
Last years in exile Leo and his two sons were sent to prison in Constantinople. They were soon allowed to live in the court under surveillance and John acted more honorably towards Leo, with the two dining and going on hunting parties together. Leo's son Roupen was later murdered by Byzantine grandees that were envious of his strength.
Leo died in Constantinople.
Marriage and children Orderic Vitalis states that Leo was "uncle to the wife of Bohemond II of Antioch". On this basis, some authors have proposed that Leo's wife was the daughter of Hugh I of Rethel or Gabriel of Melitene. (?) unnamed daughter, who was the wife of a “Frankish knight from Antioch”, and mother of the Regent Thomas unnamed daughter, the wife of Vasil Dgha (?) Constantine (? – Edessa, 1138/1144) Thoros II of Cilicia (? – February 6, 1169) Stephen (before 1110 – February 7, 1165) Mleh I of Cilicia (before 1120 – Sis, May 15, 1175) Roupen (after 1120 – Constantinople, 1141)
Footnotes
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Important facts
Family & relationships
People in Leo I, Prince of Armenia's life
Named in this biography and alive at the same time
Contemporaries
People whose lives overlapped Leo I, Prince of Armenia's
Frequently asked questions
Who was Leo I, Prince of Armenia?
Prince of Armenia
When was Leo I, Prince of Armenia born?
Leo I, Prince of Armenia was born in 1100.
When did Leo I, Prince of Armenia die?
Leo I, Prince of Armenia died on 14 February 1140 in Constantinople.
What was Leo I, Prince of Armenia's occupation?
Leo I, Prince of Armenia was a monarch.
Sources & further reading
· Wikipedia: Leo I, Prince of Armenia
· DBpedia: Leo I, Prince of Armenia
Cite this page
APA: Biography.guide. (2026). Leo I, Prince of Armenia. https://biography.guide/leo-i-prince-of-armenia/
MLA: "Leo I, Prince of Armenia." Biography.guide, https://biography.guide/leo-i-prince-of-armenia/.
Chicago: "Leo I, Prince of Armenia." Biography.guide. https://biography.guide/leo-i-prince-of-armenia/.
Data last updated: 2026-09-26 · Spot an error? Report a correction.
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