Original: In Greek mythology, Agamemnon ("very resolute") / (ancient Greek: ) is the son of King Atreus of Mycenae and Queen Aerope, the brother of Menelaus and the husband of Clytemnestra; different mythological versions make him the king either of Mycenae or of Argos.
Simplified: He was the son of King Atreus of Mycenae and Aerope.