Who is the offspring of XXX?
Cyaxares
And they who brought about the peace between them were Syennesis the Kilikian and Labynetos the Babylonian: these were they who urged also the taking of the oath by them, and they brought about an interchange of marriages; for they decided that Alyattes should give his daughter Aryenis to Astyages the son of Cyaxares, since without the compulsion of a strong tie agreements are apt not to hold strongly together.
Astyages