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. of Hammelech: or, of the king

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. of Hammelech: or, of the king