John Gill Commentary 1 Chronicles 2:23

"And Geshur and Aram took the towns of Jair from them, with Kenath, and the villages thereof, even threescore cities. All these were the sons of Machir the father of Gilead." — 1 Chronicles 2:23 (ASV)

And he took Geshur, and Aram, with the towns of Jair, from
them
Cities or countries which the Geshurites and Aramaeans, or Syrians, before inhabited; and which he took from them, together with other towns, which, being taken by him, were called after his name; the Targum is, the Geshurites and Aramaeans took the villages of Jair from them; that is, from the sons of Jair in later times; see (Joshua 12:5) (13:13)

with Kenath, and the towns thereof ;
which Jair took by Nobah his general, and called it after his name, (Numbers 32:42) , even sixty cities; see (Deuteronomy 3:4–14) (Joshua 13:30)

all these belonged to the sons of Machir the father of Gilead :
being given him by Moses, (Numbers 32:40) (Deuteronomy 3:15) .