Who's death stopped His Imperial Majesty's Own Chancellery?
His Imperial Majesty's Own Chancellery His Imperial Majesty's Own Chancery or H.I.M. Own Chancery (Russian: Собственная Его Императорского Величества канцелярия, Собственная Е.И.В. канцелярия ) began as personal chancery of Pavel I and grew into a kind of regent's office, run by Count Arakcheyev from 1815 and until the death of Alexander I of Russia.
Ivan the Terrible Ivan IV Vasilyevich (Russian: Ива́н Васи́льевич , "Ivan Vasilyevich" ; 25 August 1530 – 28 March [O.S. 18 March] 1584 ), commonly known as Ivan the Terrible or Ivan the Fearsome (Russian:    , "Ivan Grozny"; a better translation into modern English would be "Ivan the Formidable"), was the Grand Prince of Moscow from 1533 to 1547, then "Tsar of All the Russias" until his death in 1584. The last title was used by all his successors.