Adiel in the Bible Encyclopedia - ISBE

ad'-i-el (`adhi'el, "ornament of God"): (1) One of the "princes" of the tribe of Simeon, who, in the days of Hezekiah, smote the aborigines of Gedor and captured the valley (1 Ch 4:36 ff). (2) Father of Maasai, one of the priests who dwelt in Jerusalem after the return from the Exile (1 Ch 9:12). (3) Father of Azmaveth who was over David's treasures (1 Ch 27:25).

Link: https://bible-history.com/isbe/A/ADIEL/