1 Chronicles 2:20

And Caleb the son of Hezron begat children of Azubah his wife, and of Jerioth: her sons are these; Jesher, and Shobab, and Ardon.

And when Azubah was dead, Caleb took unto him Ephrath, which bare him Hur.

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.

And Segub begat Jair, who had three and twenty cities in the land of Gilead.