History of the Peloponnesian War

For the Lacedaemonians wished, as they had failed in saving Lesbos, to make their fleet more numerous, and to sail to Corcyra, which was in a state of sedition; as the Athenians were stationed at Naupactus with only twelve ships; and in order that they might have the start of them, before any larger fleet reinforced them from Athens. So Brasidas and Alcidas proceeded to make preparations for these measures.

For the Corcyraeans began their sedition on the return home of the prisoners taken in the sea-fights off Epidamnus, who had been sent back by the Corinthians, nominally on the security of eight hundred talents given for them by their proxeni, but in reality, because they had consented to bring over Corcyra to the Corinthians. These men then were intriguing, by visits to each of the citizens, to cause the revolt of the city from the Athenians.

On the arrival of a ship from Athens and another from Corinth, with envoys on board, and on their meeting for a conference, the Corcyraeans voted to continue allies of the Athenians according to their agreement, but to be on friendly terms with the Peloponnesians, as they had formerly been.