1 Chronicles 1:32-34

32 The sons of K’turah Avraham’s concubine: she bore Zimran, Yokshan, Medan, Midyan, Yishbak and Shuach. The sons of Yokshan: Sh’va and D’dan.

33 The sons of Midyan: ‘Eifah, ‘Efer, Hanokh, Avida and Elda‘ah. These were all descendants of K’turah.

34 Avraham fathered Yitz’chak. The sons of Yitz’chak: ‘Esav and Isra’el.