An emperor of Russia before 1917. The Russian word tsar represents Latin Caesar; it is first recorded in English in the mid 16th century. In Russia itself it was partially used by the Grand Duke Ivan III (1462–1505) and his son, but was formally assumed by Ivan IV in 1547. The title tsar was also used by Serbian rulers of the 14th century.
Tsarevich was the title of the eldest son of an emperor of Russia.
Subjects: Medieval and Renaissance History (500 to 1500).