Son of Russian statesman Fedor Fedorovich Trepov; 1874 graduated from Page Corps school in St. Petersburg; 1877-1878 served in the Cavalry Guards and fought in the Russo-Turkish War; 1896-1905 served as Chief of Police, or oberpolitseimeister, in Moscow, where he helped introduce legal workers’ organizations under police control; January-October 1905 served as temporary Governor-General in St. Petersburg as well as Vice-Minister of Internal Affairs; While suppressing the revolutionary movement, Trepov helped with the October Manifesto of 1905, proclaiming constitutional reforms; October 26, 1905 was appointed Palace Superintendent; 1906 died and was later buried in St. Peter and Paul Court Cathedral.