1 Chronicles 2:18-22

Now Caleb the son of Hezron had sons by Azubah his wife, and by Jerioth; and these were her sons: Jesher, Shobab, and Ardon.

When Azubah died, Caleb married Ephrath, who bore to him Hur.

Hur fathered Uri, and Uri fathered Bezalel.

Later, Hezron had relations with the daughter of Machir the father of Gilead, whom he married when he was sixty years old; and she bore to him Segub.

Segub fathered Jair, who had twenty-three cities in the land of Gilead.