Gregorios 29 was bishop of Gordos in Lydia; in 787 he attended the Second Council of Nikaia (the Seventh Ecumenical Council) and was probably present at all eight sessions, from 24 September to 23 November 787: Mansi XII 995-XIII 486. In the list of those present at the first and seventh sessions he is styled Γρηγορίου ἐπισκόπου Γόρδων (XIII 369 reads: Γόρδου): Mansi XII 995, XIII 369. Elsewhere he is styled Γρηγόριος ὁ ὁσιώτατος ἐπίσκοπος Γόρδων or similar: Mansi XII 1102, XIII 144 (Γόρδου), XIII 389 (Γόρδου). At the second session he supported the traditional veneration of icons as described in statements from pope Hadrian I (Hadrianos 1) and condemned iconoclasts: Mansi XII 1102. At the fourth session he subscribed the statements read out from the Fathers in support of the veneration of icons: Mansi XIII 144. At the seventh session he subscribed the statement of the faith adopted by the Council: Mansi XIII 389.

(Publishable link for this person: )