John Gill Commentary 1 Chronicles 8:39

"And the sons of Eshek his brother: Ulam his first-born, Jeush the second, and Eliphelet the third." — 1 Chronicles 8:39 (ASV)

And the sons of Eshek his brother
The brother of Azel; who he was is not known, unless he is the same with Elasah, as is conjectured:

[were] Ulam his firstborn, Jehush the second, and Eliphelet the third .