Madai

A man, in the time of the Patriarchs · Early Patriarch · named in 2 verses

the name means Middle land Easton's Bible Dictionary

Madai, a son of Japheth, is considered the ancestor of the Medes.

From Easton's Bible Dictionary

Middle land, the third "son" of Japheth (Gen. 10:2), the name by which the Medes are known on the Assyrian monuments.

Easton's Illustrated Bible Dictionary, 1897 — public domain, quoted in full and unedited.

Parents Japheth

From STEPBible's TIPNR genealogy data. A relationship the data marks uncertain is not shown here.

First named at Genesis 10:2.

Genesis 10:2 The sons of Japheth: Gomer, Magog, Madai, Javan, Tubal, Meshech, and Tiras.
1 Chronicles 1:5 The sons of Japheth: Gomer, Magog, Madai, Javan, Tubal, Meshech, and Tiras.