Grand Duke Konstantin Nikolayevich of Russia (1827–1892)
Born 1827 CE, died 1892 CE.
Grand Duke Konstantin Nikolayevich of Russia (Russian: Вели́кий князь Константи́н Никола́евич; 21 September 1827 – 25 January 1892) was the Emperor's Viceroy of Poland from 1862 to 1863 and a general admiral of the Imperial Russian Navy.
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