Albert Barnes Commentary 1 Chronicles 5:19

"And they made war with the Hagrites, with Jetur, and Naphish, and Nodab." — 1 Chronicles 5:19 (ASV)

Jetur no doubt gave his name to the important tribe of the Ituraeans, who inhabited the region southwest of the Damascene plain between Gaulonitis (Jaulan) and the Ledjah. This tribe was noted for its thieving habits and was regarded as savage and warlike.