Note 8 — Dmitriev.
John Bowring translation
The crown of Kutshum is still preserved in the museum at Moskow, among the imperial insignia. The events referred to in the above poem occurred in the year 1580. Ataman Jermak was sent by Ivan Vassilievich against Kutshum, and drove him from his capital, called Siberia (whence the name of the country): it was situated near Tobolsk.—See Karamsin’s History of Russia.