Ioannes Doukas (son of historian Anna Komnene), cousin of Manuel I E / M XII
Ἰωάννης (Polemis 78, Varzos 66-I.317) (Ioannes 17007)
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- Metabole (Bithynia)
- saved Andronikos 1 at Metabole (Bithynia) Μεταβολή. Kinnamos 128.13-16