The warlike tribes of the Chaldia, called Tzanni, the ancestors of modern Laz people lived in "Tzanica", the area located between the Byzantine and the Lazica. It included several settlements named: Athenae, Archabis and Apsarus; Tzanni were neither subjects of the Romans nor of the king of the Lazica, except that during the reign of the Byzantine emperor Justinian I (r. 527–565) they were subdued, Christianized and brought to central rule. The bishops of the Lazica appointed their priests, seeing they are Christians. Tzanni began to have closer contact with the Greeks and acquired various Hellenic cultural traits, including in some cases the language.