1 Samuel 14:51
And Kish was the father of Saul; and Ner the father of Abner was the son of Abiel.
Torrey's Topical Textbook—AKJV

1 Samuel 17:55
And when Saul saw David go forth against the Philistine, he said to Abner, the captain of the host, Abner, whose son is this youth? And Abner said, As your soul lives, O king, I cannot tell.
Torrey's Topical Textbook—AKJV