Issuing from their mountain district between Thessaly, Locris and Phocis, they overran the greater part of Peloponnesus, destroyed the ancient Achaean monarchies and expelled or reduced to subjection the original inhabitants of the land, of which they became the undisputed masters. This brief statement contains all that we know for certain respecting this celebrated event, which the ancient writers placed eighty years after the Trojan war.