Indeed, at the outset of the war, the Lacedaemonians butchered as enemies all whom they took on the sea, whether allies of Athens or neutrals.
About the same time towards the close of the summer, the Ambraciot forces, with a number of barbarians that they had raised, marched against the Amphilochian Argos and the rest of that country.

The origin of their enmity against the Argives was this.

This Argos and the rest of Amphilochia were colonized by Amphilochus, son of Amphiaraus.
Dissatisfied with the state of affairs at home on his return thither after the Trojan War, he built this city in the Ambracian Gulf, and named it Argos after his own country.

This was the largest town in Amphilochia, and its inhabitants the most powerful.

Under the pressure of misfortune many generations afterwards, they called in the Ambraciots, their neighbours on the Amphilochian border, to join their colony; and it was by this union with the Ambraciots that they learnt their present Hellenic speech, the rest of the Amphilochians being barbarians.