Rhendakios 1 (also Rhentakios) was protovestiarios of the emperor Michael III (Michael 11) in 866 and 867 (Ῥενδακίου τοῦ πρωτοβεστιαρίου αὐτοῦ): Leo Gramm. 245, 250, Georg. Mon. Cont. 831, 836, cf. Ps.-Symeon 684 (παρακοιμώμενος). In 866, on the Saturday of Pentecost (25 May), Rhendakios 1 was sent to the patriarch Photios 1 by the emperor Michael III (Michael 11) to inform him of his decision to make Basilios 7 co-emperor on the following day: Leo Gramm. 245, Georg. Mon. Cont. 831. Shortly before Michael 11 was murdered, the empress Theodora (Theodora 2) sent a message to Michael 11, who sent Rhendakios 1 to her to discover what it was about: Leo Gramm. 250, Georg. Mon. Cont. 836. The incident seems to have hastened Basilios 7's plans to kill Michael 11. It was Rhendakios 1's normal practice to sleep in the emperor's bedchamber to guard him; on the night when Michael 11 was murdered (23 September 867) he was absent and his couch was occupied by Basiliskianos 1, by the emperor's wish: Leo Gramm. 250, Georg. Mon. Cont. 836, Ps.-Symeon 684. He is probably identical with Rhendakios, basilikos spatharios and protovestiarios of the despotes, who owned a seal dateable to the second half of the ninth century: Zacos II 279. Obv.: patriarchal cross and steps with the legend +Κ(ύρι)ε βοήθ[ει] τῷ σῷ δού(λωι). Rev.: +Ρενδα - [κ]ιω β' σπαθ' - και α' βεστια' - τ' δεσπ'. The name and titles read: Ῥενδακίῳ βασιλικῷ σπαθαρίῳ καὶ πρωτοβεστιαρίῳ τοῦ δεσπότου. Cf. Guilland, Recherches 202ff., 216ff.; Seibt, Bleisiegel I, p. 331.

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