Третий Рим
Following his second marriage, Ivan developed a complicated court ceremonial on the Byzantine model and began to use the title of "Tsar and Autocrat". Also during the reign of Ivan and his son, Vasily III, Moscow came to be referred to by spokesmen as the Third Rome. Philotheos, a monk from Pskov, developed the idea of Moscow as the true successor to Byzantium and, hence, to Rome.