Gordoservon

Gordoservon or Gordoserbon or Gordoserba (Greek: Γορδόσερβον; Serbian: Гордосервон, Гордосербон) was an early medieval Byzantine city, and a bishopric, suffragan of the Metropolis of Nicaea, in the region of Bithynia, Asia Minor.

[3][4][2] As the name of the city could suggest that among its founders were Serbs,[5][6] some modern scholars consider that the colony was founded by these Slavs, and variously date it to 649,[7][8] 667,[9] 680,[10] or 688–689.

[19] However, Peter Charanis, analyzing the sources on the early Slavs of Asia Minor, noted that the sources are ambiguous on the exact date of migration, especially concerning Constans II, and that the first certain mention of the place is in 692,[4] during the Quinisext Council,[6] where was mentioned Isidore "ἀνάξιος ἐπίσκοπος Γορδοσέρβων τῆς Βιθυνῶν ἐπαρχίας" ("unworthy bishop of Gordoserba of the province of the Bithynians").

[16][2] If the settlement is related to the Serbs then it contradicts the date of the Ecthesis of pseudo-Epiphanius (640), a list of cities and bishoprics which mentions Gordoservorum or Gordoserboi in the Metropolis of Nicaea in the province of Bithynia.

[6][20] Charanis and other scholars doubt the Slavic-Serbian origin of the city because among the known bishops (Isidoros,[21] Neophytos,[22] Stephanos[15][23]) there are none with Slavic names, and due to the uncertainty around the etymology of the Serbian ethnonym.