Leo (; died 12 January 1143) was

Ecumenical Patriarch of Constantinople The ecumenical patriarch of Constantinople () is the List of ecumenical patriarchs of Constantinople, archbishop of Constantinople and (first among equals) among the heads of the several autocephalous churches that comprise the Eastern Orthodox ...

from May 1134 until his death on 12 January 1143. He was a

presbyter Presbyter () is an honorific title for Christian clergy. The word derives from the Greek ''presbyteros'', which means elder or senior, although many in Christian antiquity understood ''presbyteros'' to refer to the bishop functioning as overseer ...

Hagia Sophia Hagia Sophia (; ; ; ; ), officially the Hagia Sophia Grand Mosque (; ), is a mosque and former Church (building), church serving as a major cultural and historical site in Istanbul, Turkey. The last of three church buildings to be successively ...

before his ascension. He reigned uneventfully during the rule of

Byzantine emperor The foundation of Constantinople in 330 AD marks the conventional start of the Eastern Roman Empire, which Fall of Constantinople, fell to the Ottoman Empire in 1453 AD. Only the emperors who were recognized as legitimate rulers and exercised s ...

John II Komnenos John II Komnenos or Comnenus (; 13 September 1087 – 8 April 1143) was List of Byzantine emperors, Byzantine emperor from 1118 to 1143. Also known as "John the Beautiful" or "John the Good" (), he was the eldest son of Emperor Alexio ...

Notes and references

12th-century patriarchs of Constantinople 1143 deaths Year of birth unknown {{EasternOrthodox-bishop-stub