Empire of Nicaea
successor State of the Byzantine Empire when the crusaders conquered Constantinople at Fourth Crusade of 1204
The Empire of Nicaea (Greek: Βασίλειον τῆς Νίκαιας) was the largest of the Byzantine Greek states founded by the nobility of the Byzantine Empire after Constantinople was conquered during the Fourth Crusade. It lasted from 1204 to 1261.
Empire of Nicaea Αυτοκρατορία της Νίκαιας | |||||||||
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| 1204–1261 | |||||||||
 The Latin Empire, Empire of Nicaea, Empire of Trebizond, and the Despotate of Epirus. The borders are very uncertain. | |||||||||
| Capital | Nicaea | ||||||||
| Common languages | Greek | ||||||||
| Religion | Eastern Orthodox Church | ||||||||
| Government | Monarchy | ||||||||
| Emperor | |||||||||
• 1204 – 1222 | Theodore I Lascaris | ||||||||
• 1222 – 1254 | John III Ducas Vatatzes | ||||||||
• 1254 – 1258 | Theodore II Lascaris | ||||||||
• 1258 – 1261 | John IV Lascaris | ||||||||
• 1259 – 1261 | Michael VIII Palaeologus | ||||||||
| Historical era | High Medieval | ||||||||
• Established | 1204 | ||||||||
• Disestablished | July 1261 | ||||||||
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It ended in 1261, when Constantinople was recaptured.
