In his account of the events leading up to the outbreak of the Peloponnesian War, Thucydides tells us that in 435 b.c. the Epidamnians decided to transfer their allegiance from Corcyra to Corinth in accordance with the Delphic oracle, whereupon the Corinthians agreed to support Epidamnus against their own colony Corcyra. One of the reasons given is that the Corinthians hated the Corcyraeans for their contempt for their mother city, as ‘in their common festivals they would not allow them the customary privileges of founders, at their sacrifice they did not give priority to Corinthians [as other colonies did]’ (οὔτε γὰρ ἐν πανηγύρεσι ταῖς κοιναῖς διδόντες γέρα τὰ νομιζόμενα οὔτε Κορινθίῳ ἀνδρὶ προκαταρχόμενοι τῶν ἱερῶν ὥσπερ αἱ ἄλλαι ἀποικίαι). Precisely what the dispute was and what the word προκατάρχεσθαι means have not been convincingly explained by commentators.