Adam Clarke, on Esth 1:14

“(Now the chief and nearest him were, Charsena, and Sethar, and Admatha, and Tharsis, and Mares, and Marsana, and Mamuchan, seven princes of the Persians, and of the Medes, who saw the face of the king, and were used to sit first after him:)”

“And the next unto him - the seven princes - Probably, the privy counsellors of the king. Which saw the king's face - were at all times admitted to the royal presence.”

Imported from an open dataset — not yet checked against the printed edition.