Nikiasfrieden
Only the barest outlines of Theramenes' life outside the public sphere have been preserved in the historical record. His father, Hagnon had played a significant role in Athenian public life in the decades before Theramenes' appearance on the scene. He had commanded the group of Greek colonists who founded Amphipolis in 437–6 BC, had served as a general on several occasions before and during the Peloponnesian War, and was one of the signers of the Peace of Nicias. Hagnon's career overlapped with his son's when he served as one of the ten commissioners appointed by the government of the 400 to draft a new constitution in 411 BC.