History of the Peloponnesian War

Thucydides

Thucydides. The history of the Peloponnesian War, Volume 1-2. Dale, Henry, translator. London: Heinemann and Henry G. Bohn, 1851-1852.

So Nymphodorus came to Athens and concluded the alliance with Sitalces, and made his own son Sadocus a citizen of Athens, and undertook to bring to a close the war on the side of Thrace; for he said he would persuade Sitalces to send the Athenians a Thracian force of cavalry and targeteers.

Moreover, he reconciled Perdiccas to the Athenians, and also persuaded them to restore Therme to him; and Perdiccas immediately joined in an expedition against the Chalcidians with the Athenians and Phormio.

Thus Sitalces son of Teres, king of the Thracians, became an ally of the Athenians, as also did Perdiccas son of Alexander, king of the Macedonians.