John IV Laskaris
13th-century emperor of Nicaea
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Summary
Updated 2026-05-29
Ruled the Nicaean Empire for three years before losing Constantinople back to the Byzantines in 1261. Last emperor of the Laskarid dynasty, governing one of several Greek splinter states carved out after the Fourth Crusade's messy sack of the city.
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John IV Doukas Laskaris was the fourth emperor of the Nicaean Empire from August 16, 1258 to December 25, 1261, one of the Greek successor states formed after the Sack of Constantinople by the Roman Catholics during the Fourth Crusade. He was the last emperor from the prominent Laskarid dynasty and the last to only rule Nicaea before the Reconquest of Constantinople by his successor in 1261.
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Rising8.3
Composite of search demand, mentions, audience & graph footprint.
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Momentum4.4
Historical19.7
Source confidence60.0
Completeness60.0
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- WikidataHigh confidencewikidata · wikidata.org
- WikipediaHigh confidencewikipedia · en.wikipedia.org
- Pantheon 2.0High confidencedatabase · pantheon.world
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