The first Russian ruler to be formally crowned as "tsar of all Russia" was Ivan IV (called Ivan the Terrible), before he was crowned, he was known as Grand Prince of all Russia. In 1547, Ivan IV, grandson of Ivan the Great, was crowned the first czar of all Russia (the term czar was derived from caesar) in the Kremlin's Uspensky Cathedral. In addition, Moscow became the capital of the Holy Russian Empire. In that same year, Ivan married Anastasia Romanov. He was 16 or 17 years old when he was crowned and got married. It is said that Ivan started as a very wise czar and ended as a devil.

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