From BiblePortal Wikipedia

Morrish Bible Dictionary [1]

The inhabitants of Sepharvaim: they burnt their children in the fire to their gods.  2 Kings 17:31 .

Holman Bible Dictionary [2]

 2 Kings 17:31

International Standard Bible Encyclopedia [3]

sē´far - vı̄ts , se4& -far´ v|4ts ( ספרוים , ṣepharwı̄m ): In   2 Kings 17:31 , the inhabitants of Sepharvaim (which see), planted by the king of Assyria in Samaria. They continued there to burn their children to their native gods.