Question: Who is the paternal grandfather of Grand Duchess Elena Vladimirovna Of Russia?
Sentence (from "Grand Duke Nicholas Konstantinovich of Russia"): Grand Duke Nicholas Constantinovich of Russia( 14 February 1850 – 26 January 1918) was the first- born son of Grand Duke Konstantin Nikolayevich and Grand Duchess Alexandra Iosifovna of Russia and a grandson of Nicholas I of Russia.
Relevant evidence: No