1 Chronicles 2:26 in the King James Version
Jerahmeel had also another wife, whose name was Atarah; she was the mother of Onam.
Context
25 The sons of Jerahmeel the firstborn of Hezron were Ram the firstborn, Bunah, Oren, Ozem, and Ahijah.
26 Jerahmeel had another wife, whose name was Atarah. She was the mother of Onam.
27 The sons of Ram the firstborn of Jerahmeel were Maaz, Jamin, and Eker.