Emperor Leo V (reigned 813–820) instituted a second period of Iconoclasm in 813, which seems to have been less rigorously enforced, since there were fewer [[martyr]]doms and public destructions of icons. Leo was succeeded by Michael II, who was succeeded by his son, Theophilus. Theophilus died leaving his wife, [[Theodora (9th century empress)|Theodora the Iconodule]], regent for his minor heir, Michael III. Like Irene 50 years before her, Theodora mobilized the iconodules and proclaimed the restoration of icons in 843. Since that time the first Sunday of [[Great Lent|Lent]] is celebrated as the feast of the "Triumph of Orthodoxy."