Cyaxares II, entitled "Gubaru" (Mighty/Hero), descendant of the Midianite Hebrews. He is called Darius the Mede (דָרְיָ֖וֶשׁ הַמָּדִ֑י) in the Bible.

See:

• http://en.wikipedia.org/wiki/Cyaxares_II descendant of http://en.wikipedia.org/wiki/Diyako