Back Johannes IV Laskaris Afrikaans Johannes IV. (Byzanz) ALS Chuan IV Ducas Lascaris AN يوحنا الرابع لاسكاريس Arabic يوحنا الرابع لاسكاريس ARZ دؤردونجو ژان لاسکاریس AZB Іаан IV Ласкарыс Byelorussian Йоан IV Дука Ласкарис Bulgarian Ivan IV Laskaris BS Joan IV Ducas Làscaris Catalan
| John IV Doukas Laskaris | |||||
|---|---|---|---|---|---|
| Emperor and Autocrat of the Romans | |||||
.png) 15th-century portrait of John IV (from a 15th-century codex containing a copy of the Extracts of History by Joannes Zonaras) | |||||
| Emperor of Nicaea Claimant Byzantine Emperor | |||||
| Reign | 16 August 1258 – 25 December 1261 | ||||
| Predecessor | Theodore II Laskaris | ||||
| Successor | Michael VIII Palaiologos | ||||
| Born | 25 December 1250 | ||||
| Died | c. 1305 | ||||
| |||||
| House | Laskaris/Vatatzes | ||||
| Father | Theodore II Laskaris | ||||
| Mother | Elena of Bulgaria | ||||
| Religion | Eastern Orthodoxy | ||||
John IV Doukas Laskaris (or Ducas Lascaris) (Greek: Ἰωάννης Δούκας Λάσκαρις, Iōannēs Doukas Laskaris; December 25, 1250 – c. 1305) was emperor of Nicaea from August 16, 1258, to December 25, 1261. This empire was one of the Greek states formed from the remaining fragments of the Byzantine Empire, after the capture of Constantinople by Roman Catholics during the Fourth Crusade in 1204.