Jan 20   Theophilus, Byzantine kaiser (829-42), dies   

Feb 14   Charles II and Louis the German sign treaty   

Feb 19   Medieval Iconoclastic Controversy ends as a council in Constantinople formally reinstated the veneration of icons in the churches   

Mar 20   Alfonso II the Chaste, king of Asturia (791-842), dies.   

Jan 05   Al-mu'tasim: Abbasid caliph (b. 794)   

Jan 20   Theophilus: Byzantine kaiser (829-42),    

Mar 20   Alfonso ii the chaste: King of asturia (791-842),