Eulampios 1 was bishop of Apamea (ὁ Ἀπαμείας Εὐλάμπιος - no specific word for "bishop" is given); he was one of the opponents of the patriarch Ignatios 1 who, together with Petros 74 (Petros of Sardis), were associated with Gregorios Asbestas (Gregorios 26) and refused to communicate (in the period 847/858): Nicetas, Vita Ignatii 512C.

Bishop of Apamea; he was one of a number of bishops against whom charges (unspecified) were brought and who associated with Photios 1 (the future patriarch), meeting at Photios 1's house in Constantinople and scheming against the patriarch Ignatios 1 (847-858); they were all condemned by a synod held in Constantinople (cf. Gregorios 26, Petros 33, Petros 74): Ps.-Symeon 671. The story forms part of an account which is very hostile to Photios 1 and favourable to Ignatios 1.

Archbishop (presumably of Apamea) and skeuophylax; he was the addressee of a number of letters from the patriarch Photius 1, one (Ep. 95) dateable c. 870, another (Ep. 184) dateable c. 868/871; the others are all undateable and are theological in content: Photius, Ep. 75 (I 117 Laourdas-Westerink), Ep. 95 (I 131 Laourdas-Westerink), Ep. 127 (I 165ff. Laourdas-Westerink), Ep. 181 (II 70f. Laourdas-Westerink), Ep. 182 (II 71f. Laourdas-Westerink), Ep. 184 (II 74 Laourdas-Westerink), Ep. 210 (II 109ff. laourdas-Westerink) (all addressed Εὐλαμπίῳ ἀρχιεπισκόπῳ καὶ σκευοφύλακι or similar). He was probably skeuophylax of the Great Church.

Together with Gregorios 26 and Photios 1 he was deposed and anathematised by Ignatios 1 at the anti-Photian Council on 29 October 869; previously, on 24 October, he had spoken out at the Council on behalf of Photian bishops: Mansi XVI 88B-D, 133C. He was perhaps dead by November 879, when the archbishop of Apamea was Sophronios: Mansi XVI 381D. See Grumel, Regestes, 445,447,448. His see was presumably Apamea in Bithynia.

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