An early amphictyony centered on Kalaureia, an island close to the coast of Troezen in the Peloponnese sacred to Poseidon, was noted by Strabo. Archaeology of the site suggested to Thomas Kelly that the sacred league was founded in the second quarter of the 7th century BCE, c. 680–650; before that date there were virtually no remains at the site, which could not have been used more than sporadically. The island was known at one time as "Eirene" (Εἰρήνη) ("Peace"), clearly in reference to the amphictyony. Strabo lists the "poleis" that belonged: "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 Hermione, Epidaurus, Aegina, Athens, Prasïeis, Nauplïeis, and Orchomenus Minyeius; however, the Argives paid dues for the Nauplians, and the Lacedaemonians for the Prasians."