Possible Clues:

• Greek victim of the Furies
• In Greek myth, the son of Clytemnestra and Agamemnon
• Clytemnestra's slayer
• In Greek mythology, the brother of Electra
• Electra's co-conspirator
• Brother of Electra; so terse (anag.)
• In Greek legend, the son of Agamemnon and Clytemnestra who killed his mother and her lover, Aegisthus
• Matricidal figure of myth
• He killed two foes, losing head about others
• In Greek mythology the son of Agamemnon and Clytemnestra