The Isthmian games in honour of Neptune were also the invention of Theseus.
VIII.

Such are the accounts of the legislative enactments of Theseus.
But of these we must reject much.

We may believe from the account of Thucydides that jealousies among some Attic towns--which might either possess, or pretend to, an independence never completely annihilated by Cecrops and his successors, and which the settlement of foreigners of various tribes and habits would have served to increase--were so far terminated as to induce submission to the acknowledged supremacy of Athens as the Attic capital; and that the right of justice, and even of legislation, which had before been the prerogative of each separate town (to the evident weakening of the supreme and regal authority), was now concentrated in the common council-house of Athens.

To Athens, as to a capital, the eupatrids of Attica would repair as a general residence [93].

The city increased in population and importance, and from this period Thucydides dates the enlargement of the ancient city, by the addition of the Lower Town.