Keturah

Wife (or concubine) of Abraham after the death of Sarah, mother of six sons who became ancestors of various Arabian and eastern tribes. Genesis 25:1 calls her Abraham’s wife, while 1 Chronicles 1:32 refers to her as a concubine—Jewish tradition generally considers her a secondary wife. Her sons were Zimran, Jokshan, Medan, Midian, Ishbak, and Shuah. Through Midian, she is ancestor of the Midianites, among whom Moses lived during his exile and from whom he took his wife Zipporah. Abraham gave gifts to Keturah’s sons but sent them eastward, reserving his inheritance for Isaac (Genesis 25:5-6).