Cross reference
1 Chronicles 2:46
46 Ephah, Caleb's concubine, bore Haran, and Moza, and Gazez; and Haran became the father of Gazez.
1 Chronicles 2:18-19
18 Caleb the son of Hezron became the father of [children] of Azubah [his] wife, and of Jerioth; and these were her sons: Jesher, and Shobab, and Ardon.
19 Azubah died, and Caleb took to him Ephrath, who bore him Hur.
1 Chronicles 2:48
48 Maacah, Caleb's concubine, bore Sheber and Tirhanah.