Caleb - This other Caleb was the son of Hezron, and his wife was Azubah (I Chronicles 2:18,19). (Not to be confused with Caleb, son of Jephunneh : According to Numbers 13, Caleb, the son of Jephunneh, was one of the twelve spies sent by Moses into Canaan.)
1st Chronicles 2 Narrative
3 ¶ The sons of Judah; Er, and Onan, and Shelah: which three were born unto him of the daughter of Shua the Canaanitess. And Er, the firstborn of Judah, was evil in the sight of the Lord; and he slew him.
4 And Tamar his daughter in law bare him Pharez and Zerah. All the sons of Judah were five.
5 The sons of Pharez; Hezron, and Hamul.
6 And the sons of Zerah; Zimri, and Ethan, and Heman, and Calcol, and Dara: five of them in all.
7 And the sons of Carmi; Achar, the troubler of Israel, who transgressed in the thing accursed.
8 And the sons of Ethan; Azariah.
9 The sons also of Hezron, that were born unto him; Jerahmeel, and Ram, and Chelubai.
10 And Ram begat Amminadab; and Amminadab begat Nahshon, prince of the children of Judah;
11 And Nahshon begat Salma, and Salma begat Boaz,
12 And Boaz begat Obed, and Obed begat Jesse,
1 Chr 2:3-12