According to the Bible, Medan (Hebrew: "contention; to twist, conflict"); also spelt Madan was the third son of Abraham, the patriarch of the Israelites, and Keturah whom he wed after the death of Sarah.  Medan had five brothers, Zimran, Jokshan, Midian, Ishbak, and Shuah.
Josephus tells us that "Abraham contrived to settle them in colonies; and they took possession of Troglodytis and the country of Arabia the Happy, as far as it reaches to the Red Sea." Abraham, in all probability, tried to keep them apart from Isaac to avoid conflict while fulfilling God's commission to spread out and inhabit the globe. Little else is know about him.