Duchy of Antioch
| Ducate of Antioch Δοῦκατον τῆς Ἀντιόχειας | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Roman province of the Byzantine Empire | |||||||||||
| 970–1084/1182 | |||||||||||
Duchy of Antioch in 1025, in dotted green | |||||||||||
| Capital | Antioch | ||||||||||
| Area | |||||||||||
• c. 975 | 76,700 km2 (29,600 sq mi) | ||||||||||
| Historical era | Middle Ages | ||||||||||
| 28 October 969 | |||||||||||
• Creation of Ducate | 970 | ||||||||||
| December 969/January 970 | |||||||||||
• Seljuk Conquest | 1084 | ||||||||||
| 28 June 1098 | |||||||||||
| September 1108 | |||||||||||
• Treaty of Antioch | 1137 | ||||||||||
• Disestablished | 1182 | ||||||||||
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The Duchy or Ducate of Antioch was a Byzantine territory ruled by a doux (Ancient Greek: δούξ) also known as a katepano (Ancient Greek: κατεπάνω) appointed by and under the authority of the emperor. It was founded in 970 after the reconquest of Antioch by imperial troops and existed until December 1084, when Suleiman ibn Qutalmish (r. 1077–1086) of the Sultanate of Rum conquered the ducal capital. After the Treaty of Devol in 1108, the Crusader prince of Antioch was recognised by the emperor as the doux of Antioch, an agreement which continued intermittently until shortly after the death of Manuel I Komnenos in 1180.