Arsaphios 3 was a spatharios; envoy of the emperor Nikephoros I (Nikephoros 8) to Charlemagne (Karoulos 1), in 811 he returned to Constantinople when Karoulos 1 sent his own envoys (Aio 1, Haido 1 and Hugo 1) to ratify the peace: Annales Regni Francorum s.a. 811. Arsaphios 3 was later a protospatharios and was one of the envoys sent to Karoulos 1 by the emperor Michael I (Michael 7), following the death of the emperor Nikephoros I (Nikephoros 8); the other envoys were Michael 6 and Theognostos 20; they accompanied envoys sent by Karoulos 1 shortly before the death of Nikephoros 8 (Aio 1, Haido 1 and Hugo 1); in the church at Aachen they met Karoulos 1 and received from him the text of the ratified treaty, and acclaimed him as Imperator and Basileus; on their way home afterwards they received another copy of the same agreement from the bishop of Rome, Leo III (Leo 11), in the basilica of St Peter: Annales Regni Francorum s.a. 812.

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