Sicinnus

Sicinnus (Greek: Σίκιννος), a Persian traitor, and helper to the Athenian leader Themistocles and pedagogue to his children according to Plutarch. He is known for his actions as a negotiator between Themistocles and the Persian ruler Xerxes I during the Second Persian invasion of Greece. Sicinnus deceived Xerxes into sending his fleet into Themistocles' trap.