From BiblePortal Wikipedia

Hastings' Dictionary of the Bible [1]

Azael . Father of one of the commission appointed to investigate the foreign marriages ( 1E  Esther 9:14 ); same as Asahel No. 4.

Cyclopedia of Biblical, Theological and Ecclesiastical Literature [2]

Ἀζαῆλος ), the father of Jonathan, which latter was one of those who superintended the repudiation of the Gentile wives after the return from Babylon ( 1 Esdras 9:14); evidently the ASAHEL (See Asahel) (q.v.) of the genuine text ( Ezra 10:15).

International Standard Bible Encyclopedia [3]

az´a - el Ἀζάηλος , Azáēlos  ; compare Asahel [ Ezra 10:15 ): Father of Jonathan, one of two chief investigators of foreign marriages (1 Esdras 9:14).