1 Chronicles 2:24-28

And after that Hezron was dead in Caleb-ephratah, then Abiah Hezron’s wife bare him Ashur the father of Tekoa.

And the sons of Jerahmeel the firstborn of Hezron were, Ram the firstborn, and Bunah, and Oren, and Ozem, and Ahijah.

Jerahmeel had also another wife, whose name was Atarah; she was the mother of Onam.

And the sons of Ram the firstborn of Jerahmeel were, Maaz, and Jamin, and Eker.

And the sons of Onam were, Shammai, and Jada. And the sons of Shammai; Nadab, and Abishur.