The Principality of Tephrike was a medieval Paulician principality on the territory of historical Tephrike (present-day Divriği, Turkey).
History
In 843, the Byzantine Empress Theodora instituted a major persecution against a heretical medieval Christian sect which originated in Armenia in the 7th century, the Paulicians, throughout Asia Minor. In response, under their then leader Karbeas, the Paulicians fled across the border to the areas of Armenia under Arab control.
Under the protection of Umar al-Aqta, the Emir of Melitene, the sect was permitted by the Arabs to establish an independent Paulician state centred on Tephrike on the Upper Euphrates, which also included the newly founded cities of Amara (present-day Ömerli, Turkey) and Argaoun (present-day Arguvan, Turkey). From there, he participated regularly in the raids by the Arab border emirates into Byzantine Asia Minor. Karbeas died in 863 during Michael III's campaign against the Arabs and was possibly with Umar at Malakopea before the Battle of Lalakaon.
Karbeas's successor, Chrysocheres ('the goldhand'), devastated many cities in the continued wars with the Byzantines; in 867, he advanced as far as Ephesus. Chrysocheres was killed at the Battle of Bathys Ryax in 872 or 878.
By 878, the emperor Basil I had conquered the Paulician strongholds in Asia Minor (including Tephrike) and the survivors from the destruction of the Paulician state were largely displaced.