This was the fourth time that Dorians had come into Attica. They had come twice as invaders in war and twice as helpers of the Athenian people. The first time was when they planted a settlement at Megara (this expedition may rightly be said to have been in the reign of Codrus), the second and third when they set out from Sparta to drive out the sons of Pisistratus, and the fourth was now, when Cleomenes broke in as far as Eleusis with his following of Peloponnesians. This was accordingly the fourth Dorian invasion of Athens.