In 455 Tolmides ravaged Laconia and secured Naupactus on the Corinthian gulf; in 4544 Pericles himself defeated the Sicyonians, and made a descent upon Oeniadae at the mouth of the gulf, and in 453 conducted a cleruchy to the Thracian Chersonese.
Although by some he was held to be a Greek, the tradition of his Thracian origin was most generally accepted.
It contains a description of the southern coast of the Euxine from the Thracian Bosporus to the river Iris in Pontus.
From the mines of Thrace, and perhaps from the harbour dues and from the mines of Laurium, he derived a large revenue; under his encouragement, Miltiades had planted an Athenian colony on the shores of the Thracian Chersonese; he had even made friends with Thessaly and Macedonia, as is evidenced by the hospitality extended by them to Hippias on his final expulsion.
It is probable that Zalmoxis is Sabazius, the Thracian Dionysus or Zeus; Mnaseas of Patrae identified him with Cronus.