Stephanos 77 was patricius and dux of Rome; in office in 739, when he and pope Gregory III (Gregorios 7) gave refuge to the dux of Spoletium, Trasimund 1, at Rome and then refused to surrender him to the Lombard king, Liutprand 1, even though Rome had to undergo a siege; the date when Liutprand 1 ended the siege and withdrew from Rome was August 739 (indiction seven): Lib. Pont. 93. 2 ("ab Stephano quondam patricio et duce"; "quondam" is Duchesne's conjecture for the "quoddam" and the "quod" of the MSS). He was still in office in 742/743 (indiction eleven), when pope Zacharias (Zacharias 16) visited Ravenna and left him in control of Rome: Lib. Pont. 93. 12 ("relicta Romana urbe iamdicto Stephano patricio et duci ad gubernandum"). He presumably was patricius et dux Romae from 739 to 742, at least. Duchesne, n. 3 on p. 436, quotes a seal (published by Gamurrini, in the Bulletin of de Rossi, 1882, p. 92, and which had recently been found at Blera) which may have belonged to the same man. The text as given by Duchesne reads: κύριε βοήθει τῷ δούλῳ σου Στεφάνῳ πατρικίῳ καὶ δουκὶ Ρώμης).

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