John Gill Commentary Deuteronomy 3:14

"Jair the son of Manasseh took all the region of Argob, unto the border of the Geshurites and the Maacathites, and called them, even Bashan, after his own name, Havvoth-jair, unto this day.)" — Deuteronomy 3:14 (ASV)

Jair the son of Manasseh took all the country of Argob
Or Trachonitis; the small towns belonging to Gilead, as in (Numbers 32:41)

unto the coasts of Geshuri and Maachathi ;
these were little kingdoms in Syria, on which the country of Argob bordered, and had kings over them in the time of David, and came not into the possession of the Israelites; see (Joshua 13:13) (2 Samuel 3:3) (2 Samuel 10:6 2 Samuel 10:8) (15:8)

and called them after his own name, Bashanhavothjair, unto this day ;
see (Numbers 32:41) .