Christophoros 31 was basilikos protospatharios, epi tou kanikleiou and protoasekretis; owner of two similar seals dateable to the second half of the ninth century: Zacos II 112 (two seals). Obv. (both seals): patriarchal cross on base and three steps; circular inscription of Κ(ύρι)ε βοήθει τῷ σῷ δούλῳ. Rev. (first seal): +Χρις - [τ]οφ' β' α' ς - [π]αθ' επι τ' κ - ανκλ' (καὶ) α' - ασηκρ'; (second seal): +Χρις - τοφ' β' α' ς - παθ' επι τ' κ - αν' (καὶ) α' ας - ηκρητ'. The name and titles read: Χριστοφόρῳ βασιλικῷ πρωτοσπαθαρίῳ ἐπὶ τοῦ κανικλείου καὶ πρωτοασηκρῆτις. An official with the same name and titles subscribed the Acts of the Eighth Ecumenical Council in 870 (Mansi XVI 190, 409: "Christoforo proto a secretis et praeposito caniculi"), possibly the same individual.

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