Joannes Xiphilinus, a native of Trebizond, also known as John Xiphilinus or John VIII, was patriarch of Constantinople from 1064-1075. He was the uncle of John Xiphilinus the Epimator. John VIII also wrote a hagiography of Saint Eugenios of Trebizond.
Constantine III Lichoudes
|Patriarch of Constantinople|
| Succeeded by|
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