Korah, Korahite, Korahites

Definition:

Korah was the name of three men in the Old Testament.

One of the sons of Esau was named Korah. He became a leader in his community.
Korah was also a descendant of Levi and so served in the tabernacle as a priest. He became jealous of Moses and Aaron and led a group of men to rebel against them.
A third man named Korah is listed as a descendant of Judah.