Son of Hezron
The sons also of Hezron, that were born unto him; Jerahmeel, and Ram, and Chelubai. (1 Chronicles 2:9)
Called CALEB
And Caleb the son of Hezron begat children of Azubah his wife, and of Jerioth: her sons are these; Jesher, and Shobab, and Ardon. (1 Chronicles 2:18)
Now the sons of Caleb the brother of Jerahmeel were, Mesha his firstborn, which was the father of Ziph; and the sons of Mareshah the father of Hebron. (1 Chronicles 2:42)