Adriel in Smiths Bible Dictionary

(flock of God), son of Barzillai, to whom Saul gave his daughter Merab, although he had previously promised her to David. 1Sa 18:19 (B.C. about 1062.) His five sons were amongst the seven descendants of Saul whom David surrendered to the Gibeonites. 2Sa 21:8

Link: https://bible-history.com/smiths/A/Adri-el/