Peace of Nicias
Hagnon, son of Nikias () was an Athenian general and statesman. In 437/6 BC, he led the settlers who founded the city of Amphipolis in Thrace; in the Peloponnesian War, he served as an Athenian general on several occasions, and was one of the signers of the Peace of Nicias and the alliance between Athens and Sparta. In 411 BC, during the oligarchic coup, he supported the oligarchy and was one of the ten commissioners ("probouloi") appointed to draw up a new constitution.