Charles Ellicott Commentary Esther 1:14

"and the next unto him were Carshena, Shethar, Admatha, Tarshish, Meres, Marsena, and Memucan, the seven princes of Persia and Media, who saw the king`s face, and sat first in the kingdom)," — Esther 1:14 (ASV)

Marsena. —It has been suggested that we may possibly recognise here Mardonius, the commander at Marathon; and in Admatha, Artabanus, the uncle of Xerxes.

The seven princes. —There were seven leading families in Persia, the heads of which were the king’s chief advisers, the seven counsellors of Ezra 7:14. Herodotus (iii. 84) speaks of the seven nobles who rose against the Pseudo-Smerdis as chief in the nation.