Izhar:

iz'-har (yitshar, "the shining one"):

(1) The father of Korah (Nu 16:1), descended from a Kohathite Levite of this name, whose descendants formed a family, in the tribe of Levi (Ex 6:18,21; Nu 3:19,27; 1Ch 6:18,38).

(2) A descendant of Judah, whose mother's name was Helah. the American Revised Version margin gives the name Zohar (1Ch 4:7).