Grand Duke Nicholas Nikolaevich of Russia was the third son and sixth child of Tsar Nicholas I of Russia and Alexandra Feodorovna. He may also be referred to as Nicholas Nicolaievich the Elder to tell him apart from his son. Trained for the military, as a Field Marshal he commanded the Russian army of the Danube in the RussoTurkish War, 18771878.
Grand Duke Nicholas Nikolaevich was born onAugust 1831 in Tsarskoye Selo.
Source: Wikipedia