“Caleb son of Hezron had children by his wife Azubah, and by Jerioth. These were her sons Jesher, Shobab, and Ardon. When Azubah died, Caleb married Ephrath, who bore him Hur. Hur was the father of Uri. Uri was the father of Bezalel.”
Here Caleb is called a son of Hezron, indicating that the Chelubai above may be this Caleb. However, this Caleb is not the Caleb mentioned in Numbers and Joshua since he was the son of Jephunneh. However, this Caleb may have been the great grandfather of that Caleb since he was the father of Hur. Hur might have been the grandfather of Caleb in Numbers. There was another Azubah who was the mother of King Jehoshaphat of Judah. This is the only mention of Jerioth. As for the 3 sons, this is the only mention of Jesher, Shobab, and Ardon. However, King David had a son with Beth-sheba that was also called Shobab. There was a place called Ephrath, the name of the 2nd wife of Caleb. This may have been the name of Bethlehem. The name Hur appeared as the brother-in-law of Aaron, Miriam’s husband, in Exodus. It also was the name of some defeated people in Numbers. Uri was also the name of one of Solomon’s officers. However, this Uri was the father of Bezalel, who was one of the chief architects with a divine spirit that worked on the sanctuary and the Ark of the Covenant in Exodus, chapter 35.