History of the Peloponnesian War

Thucydides

Thucydides, Vol. 1-4. Smith, Charles Foster, translator. London and Cambridge, MA: Heinemann and Harvard University Press, 1919-1923.

but some Corinthians and other Dorians joined the Corcyraeans in establishing the colony. As time passed the city of the Epidamnians became great and populous;

but civil wars ensued, lasting, it is said, for many years, and in consequence of a war with the neighbouring barbarians they were crippled and stripped of most of their power.