Theophylaktos 91 was a droungarios; his family name was apparently Dabaltes; owner of a seal dateable between the mid eighth century and the mid ninth: Zacos and Veglery 2530. Obv.: cruciform monogram of Θεοτόκε βοήθει, with τω - σω - δου - λω in the corners. Rev.: Θεωφυ - λακτω δρ - ουγγαρ' τ - ω Δαβαλ - τη+. The reverse reads: Θεοφυλάκτῳ δρουγγαρίῳ τῷ Δαβάλτῃ. The last word is apparently the family name of the owner.

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