Esther 1:10
On the seventh day, when the heart of the king was merry with wine, he commanded Mehuman, Biztha, Harbona, Bigtha, and Abagtha, Zethar, and Carcas, the seven chamberlains that served in the presence of Ahasuerus the king,
Nave's Topical Index—AKJV

Esther 7:9
And Harbonah, one of the chamberlains, said before the king, Behold also, the gallows fifty cubits high, which Haman had made for Mordecai, who spoken good for the king, stands in the house of Haman. Then the king said, Hang him thereon.
Nave's Topical Index—AKJV