Michael 57 was protovestiarios and protonotarios of Paphlagonia; owner of a seal dateable to the eleventh century (see below): Konstantopoulos, Stamoules, no. 83. The text was read by Konstantopoulos as : Μιχαὴλ βασιλικῷ ὀστηαρίῳ καὶ πρωτονοταρίῳ Πεφλαγονία(ς). It was corrected, from the photograph published by Konstantopoulos, by F. Dölger in his review of Konstantopoulos, Stamoules, in BZ 31 (1931), p. 219, to read: Μιχαὴλ [α]βεστηαρ(ίῳ), i.e. πρωτοβεστηαρ(ίῳ), and Laurent accepted this correction, in "Bulletin" II, p. 800, but still preferred to date the seal to the eleventh century; see also Laurent, "Sceaux" IV, p. 346, note 1, where he also distinguishes the owner of this seal from the basilikos vestitor and protonotarios of Paphlagonia, Michael 40.

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