Deuteronomy 3:13-14

To the people of East Manasseh I gave the rest of Gilead and all of Bashan, the kingdom of Og. (The area of Argob in Bashan was called the land of the Rephaites. Jair, a descendant of Manasseh, took the whole area of Argob, all the way to the border of the Geshurites and Maacathites. So that land was named for Jair, and even today Bashan is called the Towns of Jair.)