Jair was the only child of Segub [Family].

1 Chr 2:21 And afterward Hezron went in to the daughter of Machir the father of Gilead, whom he married when he was threescore years old; and she bare him Segub. 1 Chr 2:22 And Segub begat Jair, who had three and twenty cities in the land of Gilead. 1 Chr 2:23 And he took Geshur, and Aram, with the towns of Jair, from them, with Kenath, and the towns thereof, even threescore cities. All these belonged to the sons of Machir, the father of Gilead.

No children listed.