Numbers 32:41

32:41 Now Jair son of Manasseh went and captured their small towns and named them Havvoth Jair.

Deuteronomy 3:14

3:14 Jair, son of Manasseh, took all the Argob region as far as the border with the Geshurites ¹  and Maacathites ²  (namely Bashan) and called it by his name, Havvoth-Jair, ³  which it retains to this very day.)

[3:14]  ¹ sn Geshurites. Geshur was a city and its surrounding area somewhere northeast of Bashan (cf. Josh 12:5 ; 13:11, 13). One of David’s wives was Maacah, the daughter of Talmai king of Geshur and mother of Absalom (cf. 2 Sam 13:37; 15:8; 1 Chr 3:2).

[3:14]  ² sn Maacathites. These were the people of a territory southwest of Mount Hermon on the Jordan River. The name probably has nothing to do with David’s wife from Geshur (see note on “Geshurites” earlier in this verse).

[3:14]  ³ sn Havvoth-Jair. The Hebrew name means “villages of Jair,” the latter being named after a son (i.e., descendant) of Manasseh who took the area by conquest.