Strabo, Geography

Troezen is sacred to Poseidon, after whom it was once called Poseidonia. It is situated fifteen stadia above the sea, and it too is an important city. Off its harbor, Pogon by name, lies Calauria, an isle with a circuit of about one hundred and thirty stadia. Here was an asylum sacred to Poseidon; and they say that this god made an exchange with Leto, giving her Delos for Calauria, and also with Apollo, giving him Pytho¹ for Taenarum. And Ephorus goes on to tell the oracle: “"For thee it is the same thing to possess Delos or Calauria, most holy Pytho or windy Taenarum."
”And there was also a kind of Amphictyonic League connected with this temple, a league of seven cities which shared in the sacrifice; they were Hermion,² Epidaurus, Aegina, Athens, Prasïeis, Nauplïeis, and Orchomenus Minyeius; however, the Argives paid dues for the Nauplians, and the Lacedaemonians for the Prasians. The worship of this god was so prevalent among the Greeks that even the Macedonians, whose power already extended as far as the temple, in a way preserved its inviolability, and were afraid to drag away the suppliants who fled for refuge to Calauria; indeed Archias, with soldiers, did not venture to do violence even to Demosthenes, although he had been ordered by Antipater to bring him alive, both him and all the other orators he could find that were under similar charges, but tried to persuade him; he could not persuade him, however, and Demosthenes forestalled him by suiciding with poison. Now Troezen and Pittheus, the sons of Pelops, came originally from Pisatis; and the former left behind him the city which was named after him, and the latter succeeded him and reigned as king. But Anthes, who previously had possession of the place, set sail and founded Halicarnassus; but concerning this I shall speak in my description of Caria and Troy.³