Reference

Genesis 25:1

Then again Abraham took a wife, and her name was Keturah.
1

Then again Abraham took a wife, and her name was Keturah.

2

And she bare him Zimran, and Jokshan, and Medan, and Midian, and Ishbak, and Shuah.

3

And Jokshan begat Sheba, and Dedan. And the sons of Dedan were Asshurim, and Letushim, and Leummim.