Medan in the Bible Encyclopedia - ISBE
me'-dan (medhan, "strife"): One of the sons of Abraham by
Keturah (Gen 25:2; 1 Ch 1:32). The tribe and its place remain
unidentified, and the conjecture that the name may be
connected with the Midianites is unlikely from the fact that
in the list of the sons of Abraham and Keturah Midian is
mentioned alongside of Medan.