Smith's Bible Dictionary (1863)
(quiet), the second son of Saul by his wife Ahinoam (1 Samuel 14:4) comp. 1Sam 14:50 (Died B.C. 1053.)
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
ISH'UI (quiet). The third son of Asher, 1 Chr 7:30; called Isui and Jesul Gen 46:17; Num 26:44. A son of Saul, 1 Sam 14:49:not elsewhere mentioned; he probably died young.