Nicopsis
Nicopsis, Nikopsis, or Nikopsia was a medieval fortress and town on the northeastern Black Sea coast, somewhere between the Russian towns of Tuapse and Gelendzhik. It features in the medieval Greek and Georgian sources as a Byzantine outpost and then as the northwestern extreme of the Kingdom of Georgia. A center of Christianity in the region known as Zichia, Nikopsis was at times a Byzantine bishopric and was believed to be a burial place of the apostle Simon the Canaanite.
Early records
Nikopsis first appears in the anonymous periplus of the 5th century as a Black Sea locale otherwise known as Palaia Lazike, a toponym also mentioned in the 2nd-century Periplus of the Euxine Sea by Arrian. This name suggests that the area was a scene of a considerable tribal movement or, in the view of Anthony Bryer, could have been the original homeland of the Laz people.Middle Ages
Nikopsis, as Napsa, appears as a Byzantine outpost—among the cities and places under "the sway of the servant of Christ, the king of the Ionians, who is residing in the great city of Constantinople"—in the 8th-century Georgian Vita of Abo of Tiflis by Ioane Sabanisdze. Nikopsis is called a kastron, "fortress", located on the homonymous river between Abasgia and Zichia, by Constantine Porphyrogenitus in the 10th century.The Kingdom of Georgia expanded to the vicinity of Nicopsis during its "Golden Age" in the 12th and 13th centuries. Well known in the medieval Georgian texts was the boast that their kings held sway from. This formula determined the extent of the territory over which the Georgian monarchy claimed authority by means of its northwestern and northeastern geographic extremes, Nikopsis on the Black Sea and Derbend on the Caspian. It first appears in the controversial testament will of David IV "the Builder", composed in 1125, and recurs in the chronicles of the reigns of his successors, especially, Queen Tamar.