The Cassopaean people seem to have been derived as a branch of the Thesprotian people... They dwelt primarily in the area between the Acheron (retaining its ancient name today), the Aphas (modern Louros River) and the Sinus Ambracius (modern Gulf of Ambracia). The synoikismos of a number of Cassopaean villages in the area in the first half of the 4th century BCE resulted in the founding of Cassope, which became the chief settlement of the Cassopaeans. The city is mentioned, in passing, in Diodorus Siculus' description of the Macedonian king Cassander's campaign against Alcetas II of Epirus around 312 BCE.A...