Ioannes 211 was a basilikos koubikoularios; owner of a seal dateable to the eighth or ninth century: Schlumberger, Sig., p. 487, no. 8 (facsimile). Obv.: invocative monogram of Θεοτόκε βοήθει with the legend τω - σω - δου - λω. Rev.: +Ἰωά - ννη β(ασιλικῷ) κ - ουβικ - ουλ(αρίῳ). Probably a eunuch. Cf. also Ioannes 283.

(Publishable link for this person: )