726: Emperor Leo III publicly professes his opposition to icon veneration. 
January 730: An imperial edict against icon veneration is issued. 
February-August 754: Iconoclastic council of Hieria 
771-772: Persecution of iconodule monks in the theme of Thrakesion by the strategos Michael Lachanodrakon. 
fall of 787: The Seventh Ecumenical Council in Nicaea restores the icons. The end of the first phase of the Iconoclasm. 
815: A council in Constantinople bans icon veneration once again. Second phase of the Iconoclasm. 
833: Theophilos issues a new iconoclastic edict. 
838: The iconodules are anathematized by the patriarch Ioannes Grammatikos. 
March 843: Empress Theodora finally restores the icons. Iconoclasm comes to an end.