A Michael Zorianos was the first officer of the despot of Epiros in west-central Greece and one of the founders of a church in the town of Mokista sometime around the year 1300. Perhaps this ring belonged to him and was used to seal official documents.
Inscription: Seal of Michael Zorianos (Inscribed in reverse)
E. P. Triantaphyllos(sold 1918 through John Marshall)
Evans, Helen C., Melanie Holcomb, and Robert Hallman. "The Arts of Byzantium." The Metropolitan Museum of Art Bulletin, n.s., 58, no. 4 (Spring 2001). p. 54.
Evans, Helen C., ed. Byzantium: Faith and Power (1261-1557). New York, New Haven, and London: The Metropolitan Museum of Art, 2004. no. 16, p. 46.