Deut 3:13-14

13and I gave to the half-tribe of Manasseh the rest of Gilead and all of Bashan, Og's kingdom. (The whole region of Argob: all that portion of Bashan used to be called a land of Rephaim;14Jair the Manassite acquired the whole region of Argob as far as the border of the Geshurites and the Maacathites, and he named them—that is, Bashan—after himself, Havvoth-jair, as it is to this day.)