Deeply devoted to the Tsar he voluntarily accompanied the Imperial family to imprisonment in Tobolsk .
Dolgorukov was a close friend of Nicholas II as well as his advisor , Marshal of the Imperial Court ( 1914 -- 1917 ) and Commander of the Imperial Guard cavalry regiment .
Deeply devoted to the Tsar Nicholas II voluntarily accompanied the Imperial family to imprisonment in Tobolsk .
Dolgorukov was a close friend of Nicholas II as well as his advisor , Marshal of the Imperial Court ( 1914 -- 1917 ) and Commander of the Imperial Guard cavalry regiment .