Ivan the Terrible
Grand Prince of Moscow and 1st Tsar of Russia
Was 847 Pope Leo same iteration of his name as Ivan the Terrible?
Pope Leo in 847 AD was the fourth Leo to have that name and was called Leo IV. Ivan the Terrible was the 4th Tsar to have the name Ivan and was known as Ivan IV Vasilyevich.
Which Pope Leo is associated with the year 847 AD? How many similarly named popes were before #1? What was Ivan the Terrible's title as a ruler? How many similarly named #3 ruled before him? Is #2 equal to #4?