Is the son of thyestes who will avenge his father for the 'banquet of thyestes'.

The correct answer is Aegisthus.
According to this myth, Thyestes was the king of Olympia who killed his own half-brother Chrysippus, along with his brother Atreus, and for that, they were exiled by their father, Pelops. Atreus later took the throne, even though Thyestes was supposed to, and during the feast, he served Thyestes his own children he previously cooked. Therefore, it was prophesied that Thyestes' son would kill Atreus, which was what happened. Aegisthus, Thyestes' son, did kill him in the end and avenged his father for the Banquet.

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United states v.  nixon, 418  u.s.  683 (1974),  was  a landmark  united states supreme court case  that resulted in a unanimous  decision  against president richard  nixon, ordering him to deliver tape recordings  and  other subpoenaed materials to a  federal  district  court.