Easton's Bible Dictionary (1897)
Or Abi’dah, father of knowledge; knowing, one of the five sons of Midian, who was the son of Abraham by Keturah (1 Chr. 1:33), and apparently the chief of an Arab tribe.
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
ABI'DA, or ABI'DAH (father of knowledge, i. e. wise), a son of Midian. Gen 25:4; 1 Chr 1:33.