John IV Laskaris
Sign in to save13th-century emperor of Nicaea
Person
- Born
- 1250-12-25
- Died
- 1305-01-01
via Open Library + Wikidata
Recent publications · Crossref
5 total works indexed
- Generalized Gradient Approximation Made Simple
· 1996 · cited 200,201x
- Highly accurate protein structure prediction with AlphaFold
· 2021 · cited 41,536x
- Gene Ontology: tool for the unification of biology
· 2000 · cited 36,305x
- Matplotlib: A 2D Graphics Environment
· 2007 · cited 34,191x
- The MOS 36-ltem Short-Form Health Survey (SF-36)
· 1992 · cited 28,820x
via Crossref · CC0
Key facts
- Reign
- 16 August 1258 – 25 December 1261
- Predecessor
- Theodore II Doukas Laskaris
- Successor
- Michael VIII Palaiologos
- Born
- 25 December 1250
- Died
- c. 1305
via Wikipedia infobox
Key dates
- Born
- 25 December 1250
- Died
- 1 January 1305
via Wikidata · CC0
Wikidata facts
- Instance of
- human
- Given name
- John
- Gender
- male
- Citizenship
- Byzantine Empire
- Place of birth
- İznik
- Father
- Theodore II Laskaris
- Occupation
- ruler
- Position held
- Byzantine emperor
- Religion
- Eastern Orthodoxy
Article
HouseLaskaris/Vatatzes FatherTheodore II Doukas Laskaris MotherElena Asenina of Bulgaria ReligionEastern Orthodoxy
John IV Doukas Laskaris (or Ducas Lascaris) (Greek: Ἰωάννης Δούκας Λάσκαρις, romanized: Iōánnēs Doúkās Láskaris; December 25, 1250 – c. 1305) 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.