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Grand Duke Nicholas Nikolaevich's father was also named Grand Duke Nicholas Nikolaevich. The elder Nicholas Nikolaevich was the third son of Emperor Nicholas I of Russia and his wife, Alexandra Feodorovna. He was born in 1831 and died in 1891. The younger Nicholas Nikolaevich was born in 1856 and died in 1929. He was the eldest son of the elder Nicholas Nikolaevich and his wife, Alexandra Petrovna of Oldenburg.