In the later part of his story Herodotus is dependent on the family traditions of Harpagus, whose treason is justified by the cruelty with which Astyages had treated him (the story of Atreus and Thyestes is transferred to them).
The richness of the Aegean capitals and columns may be judged by those from the "Treasury of Atreus" now set up in the British Museum; and of the friezes we have examples in Mycenaean and Cnossian fragments, and Cnossian paintings.
AGAMEMNON, one of the most distinguished of the Greek heroes, was the son of Atreus (king of Mycenae) and Aerope, grandson of Pelops, great-grandson of Tantalus and brother of Menelaus.
Another account makes him the son of Pleisthenes (the son or father of Atreus), who is said to have been Aerope's first husband.
Atreus was murdered by Aegisthus, who took possession of the throne of Mycenae and ruled jointly with his father Thyestes.