Wikipedia
The Heniochi ( Heniochebi; , HenÃochoi) "charioteers") were an ancient tribe inhabiting northwest shores of Colchis (present-day Abkhazia) and some say Phasis area. They are attested by a number of ancient historians and others alike, namely: Aristotle, Artemidorus Ephesius, Ovid, Pliny the Elder, Arrian, Strabo and others. It is pointed out that they lived in a quite wide area from Dioscurias , to Trabzon. The first mentions of this people is contained in the cuneiform inscriptions found in Urartu, which date back to the 8th century BC.
Sources from the 5th to 4th century BC till the 1st century AD note the Heniokhs lived from modern Sochi till Pitiunt - Dioskuria. This may make them one of the oldest Georgian tribes. The Georgian tribe of Heniochs according to Artemidorus of Ephesus, occupied in the 5th - 1st cc. B.C, the Black Sea littoral that is part of present-day Abkhazia: - from the environs of Pitiunt or Pityus (Bichvinta) to the river Achaeuntus (the Shakhe river near present-day Tuapse).