|Easton's Bible Dictionary|
Contention, the third son of Abraham by Keturah (Genesis 25:2).
Int. Standard Bible Encyclopedia
me'-dan (medhan, "strife"): One of the sons of Abraham by Keturah (Genesis 25:2 1 Chronicles 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.
Medan (2 Occurrences)
Genesis 25:2 She bore him Zimran, Jokshan, Medan, Midian, Ishbak, and Shuah. (WEB KJV JPS ASV BBE DBY WBS YLT NAS RSV NIV)
1 Chronicles 1:32 The sons of Keturah, Abraham's concubine: she bore Zimran, and Jokshan, and Medan, and Midian, and Ishbak, and Shuah. The sons of Jokshan: Sheba, and Dedan. (WEB KJV JPS ASV BBE DBY WBS YLT NAS RSV NIV)