Historical Events in 842 AD Feb 14 Charles II & Louis the German sign treaty Feb 19 Medieval Iconoclastic Controversy ends as a council in Constantinople formally reinstates the veneration of icons in churches Famous People Who Died in 842 AD Jan 5 Al-Mu'tasim, Abbasid caliph (b. 794) Jan 20 Theophilus, Byzantine kaiser (829-42), dies Mar 20 Alfonso II the Chaste, king of Asturia (791-842), dies 841 AD History by Year 843 AD