John VIII of Constantinople

John VIII of Constantinople (born John Xiphilinos; ; 1010 – 2 August 1075), a native of Trebizond, was a Byzantine intellectual, jurist,

Early career John was born in Trebizond to the Xiphilinos family. He pursued studies at the University of Constantinople and eventually became nomophylax of its School of Law. Later he became a monk and was eventually selected by Emperor Constantine X Doukas (1059–1067) to succeed Constantine III of Constantinople as the Ecumenical Patriarch of Constantinople.

Episcopacy In 1072, John VIII presided over an assembly of metropolitans and archbishops at the oratory of Saint Alexius in which the question of the election of bishops to vacant sees was discussed. Michael I of Constantinople had forbidden metropolitans who were resident in Constantinople from participating in such elections. John, however, recognised that metropolitans sometimes had to remain for a long period in the capital due to ecclesiastical business or illness. The assembly with John's consent decreed that metropolitans who gave the patriarch advance notification of their intent could again vote while resident in Constantinople. After his death, his remains were buried at the monastery of Angourion on 2 August 1075.

John VIII wrote a hagiography of Saint Eugenios of Trebizond.

John VIII has been canonised in the Eastern Orthodox Church and his feast day is celebrated on 30 August.

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