Smith’s Bible Dictionary

Ithrite

(belonging to Jether), The, the designation of two of the members of David’s guard, Ira and Gareb. (2 Samuel 23:38; 1 Chronicles 11:40) They may have come from Jattir, in the mountains of Judah. (B.C 1046.)

Smith’s Bible Dictionary, William Smith (1863). Public domain, from the CrossWire SWORD module.