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.
Text from the Wikipedia article Grand_Duke_Konstantin_Nikolayevich_of_Russia, licensed CC BY-SA 4.0.