HAMMELECH hăm’ ə lĕk (֠הַמֶּלֶכְ, the king). The KJV rendering of ֠הַמֶּלֶכְ, the king, in Jeremiah 36:26; 38:6. KJVmg., ASV, and RSV have “the king,” which is undoubtedly correct.

International Standard Bible Encyclopedia (1915)

Wrongly translated as a proper name in the King James Version. It should be rendered "the king," as in the American Standard Revised Version (Jer 36:26; 38:6).