| John III Doukas Vatatzes | |||||
|---|---|---|---|---|---|
| Emperor and Autocrat of the Romans | |||||
.png) 15th-century portrait of John III (from a 15th-century codex containing a copy of the Extracts of History by Joannes Zonaras) | |||||
| Emperor of Nicaea Claimant Byzantine Emperor | |||||
| Reign | December 1221 – 3 November 1254 | ||||
| Predecessor | Theodore I Laskaris | ||||
| Successor | Theodore II Laskaris | ||||
| Born | c. 1192 Didymoteicho, Byzantine Empire | ||||
| Died | 3 November 1254 (aged 62) Nymphaion, Byzantine Empire | ||||
| Burial | Monastery of Sosandra, region of Magnesia | ||||
| Spouses | Irene Laskarina Anna of Hohenstaufen | ||||
| Issue | Theodore II Laskaris | ||||
| |||||
| House | Vatatzes | ||||
| Father | Basil Vatatzes (?) | ||||
| Mother | Unknown | ||||
| Religion | Eastern Orthodox | ||||
John III Doukas Vatatzes, Latinized as Ducas Vatatzes (Greek: Ἰωάννης Γ´ Δούκας Βατάτζης, Iōannēs III Doukas Vatatzēs, c. 1192 – 3 November 1254), was Emperor of Nicaea from 1221 to 1254. He was succeeded by his son, known as Theodore II Laskaris.