In Greek mythology, Agamemnon was a High King of Mycenae and commander of the Greek expeditionary force attacking Troy during the Trojan War. He sacrificed his daughter Iphigeneia to overcome contrary winds to sail to Troy. His dispute with Achilles over the concubine Briseis is central to the Iliad. On his return after the war, his wife Clytemnestra killed him to revenge Iphigenia, and to prevent his discovering about her lover, Aegisthus.
He may well have some historical existence, Akagamunaš, ruler of Ahhiyawa (i.e. the Achaeans, a Homeric name for the Greeks in the Trojan War) being mentioned in Hittite records of about the right period.