Easton's Bible Dictionary (1897)
Oil, one of the sons of Kohath, and grandson of Levi (Ex. 6:18, 21; Num. 16:1).
Smith's Bible Dictionary (1863)
(oil), son of Kohath grandson of Levi, uncle of Aaron and Moses and father of Korah. ) Izhar was the head of the family of the Izharites, (1 Chronicles 24:22; 26:23) or Izeharites.
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
IZ'HAR (oil), a son of Kohath, and grandson of Levi. Ex 6:18, Ex 6:21; Num 3:19; Mark 16:1; 1 Chr 6:2, 1 Chr 6:18.