Seven counselors - Herodotus relates that there were seven families pre-eminent in Persia, those of the seven conspirators against the Pseudo-Smerdis (Ezra 4:7 note); and it is reasonable to suppose that the heads of these families formed the special council of the king; the “Achaemenidae,” or royal family, being represented by the head of the branch next in succession to that of the reigning monarch (see the marginal reference).
Related Commentaries of Ezra 7:14
Ezra 7:14
14 Forasmuch as thou art sent of the king,b and of his seven counsellors, to enquire concerning Judah and Jerusalem, according to the law of thy God which is in thine hand;