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.
Easton’s Bible Dictionary
Hammelech
Name meaninga king; a counselor
Easton’s Bible Dictionary (1897), public domain. Text via Theographic Bible Metadata, CC BY-SA 4.0.