Madai in Fausset's Bible Dictionary

Genesis 10:2, sons, i.e. descendants, of Japheth, an ethnic designation. The Medes, who called themselves Made, S.W. of the Caspian. Some came with the Scythians to Europe, the mixed race formed the Sarmatians. Modern ethnology has found that in physical type and language the Medes belong to the Indo Germanic family of mankind, comprising the Celts, Greeks, Romans, etc.