Title: Ho anamenomenos hagios Vasileus Iōannēs Vatatzēs ho Heleēmōn
Subjects: Emperors, Historiography, Biography, Christian saints, History and criticism, Greek Hymns, Byzantine chants, Divine office
Places: Turkey, Nicaea, Greece, Nicaea (Turkey)
People: John III Ducas Vatatzes, Emperor of Nicea (1193-1254)