Ioannes was born about 1215, the son of unknown parents. The place is not known.
He died in 1254. The place is not known.
His wife was Eudokia Komnaina Angelina. They were married, but the date and place have not been found. Their two known children were Theodora Dukaina (1240-1303) and Maria Doukaina Komnene Branaina (?-?).
| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Birth | ABT 1215 |
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| Death | 1254 |
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|---|
| Nobility Title | Αυτοκράτορας του Βυζαντίου (emperor of Byzantium) |