The king’s, the father of Jerahmeel, mentioned in Jer. 36:26. Some take this word as a common noun, “the king”, and understand that Jerahmeel was Jehoiakim’s son. Probably, however, it is to be taken as a proper name.
Hammelech
2 verses
Jeremiah
Jeremiah 36:26
But the king commanded Jerahmeel the son of Hammelech, and Seraiah the son of Azriel, and Shelemiah the son of Abdeel, to take Baruch the scribe and Jeremiah the prophet: but the LORD hid them.
Jeremiah 38:6
Then took they Jeremiah, and cast him into the dungeon of Malchiah the son of Hammelech, that was in the court of the prison: and they let down Jeremiah with cords. And in the dungeon there was no water, but mire: so Jeremiah sunk in the mire.
From Easton's Bible Dictionary
Matthew George Easton, 1897
From Smith's Bible Dictionary
William Smith, 1884
lit. "the king, " unnecessarily rendered in the Authorized Version as a proper name. (Jeremiah 36:26; 38:6)