This Day In History: January 16, 1547 On January 16, 1547, 16-year-old Ivan Vasilyevich, Grand Prince of Moscow, assumed the Russian throne in the Cathedral of the Dormition, ushering in a new political era for the country – for better or worse. He demanded the title “Tsar of All the Russias” although he was in reality The Duke of Moscow. … Continue reading This Day in History: January 16th- Ivan the Terrible