Grand Duke Nicholas Mikhailovich of Russia
Grand Duke Nicholas Mikhailovich of Russia( 26 April 1859 – 28 January 1919) was the eldest son of Grand Duke Michael Nikolaevich of Russia and a first cousin of Alexander III.
A scholar and an eminent historian, he made many valuable contributions to the study of Russian history in the reign of Tsar Alexander I.
His works, published in Russian and French, include: diplomatic documents of Tsar Alexander I and Napoleon; a life of Tsar Alexander's close friend, Pavel Strogonov; and biographical studies of Alexander I and his wife Elizabeth Alexeievna.
A political liberal, he veered towards what he called" authoritarian republicanism".
He fought tirelessly for reform from within the system.
His reformist views made him an oddball within his own family, and contemporary recognition of his accomplishments came more from abroad than at home.
He was a member of the French Academy, Honorary Doctor of History and Philosophy from the University of Berlin, Honorary Doctor of History from Moscow University, and President of the Imperial Russian Historical Society, the Society of Pomology and the Russian Geographic Society.
He fell from favour during the last part of the reign of Nicholas II, as Empress Alexandra disliked him for his liberal views.
As the political situation in Russia worsened, he urged the Tsar to implement reforms, and he even participated in discussions of a palace coup.
After the fall of the monarchy, he was exiled to Vologda.
He was later imprisoned by the Bolsheviks in Petrograd and shot outside the St Peter and St Paul Fortress along with his brother Grand Duke George Mikhailovich and his cousins Grand Duke Dimitri Konstantinovich and Grand Duke Paul Alexandrovich.
Grand Duke George Mikhailovich of Russia (1863–1919)
Grand Duke George Mikhailovich of Russia (23 August 1863 – 28 January 1919) was a son of Grand Duke Michael Nikolaevich of Russia and a first cousin of Emperor Alexander III.
He was a General in the Russian army in World War I. During the Russian Revolution, he was imprisoned by the Bolsheviks and shot by a firing squad, along with his brother, Grand Duke Nicholas Mikhailovich, and his cousins Grand Dukes Paul Alexandrovich and Dmitry Konstantinovich.
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.
Prince Dmitri Alexandrovich of Russia
Prince Dmitri Alexandrovich of Russia( 15 August 1901 – 7 July 1980) was the fourth son and fifth child of Grand Duke Alexander Mikhailovich of Russia and Grand Duchess Xenia Alexandrovna of Russia.
He was a nephew of Tsar Nicholas II of Russia.
Grand Duke George Mikhailovich of Russia
Grand Duke George Mikhailovich of Russia( born 13 March 1981) is the heir apparent to Maria Vladimirovna, Grand Duchess of Russia, a claimant to the disputed Headship of the Imperial Family of Russia.
She attributes to him the title of" Tsesarevich" and he bears, as a title of pretence, the prefix of" Grand Duke" with the style of Imperial Highness; as a cadet member of the branch of the House of Hohenzollern which formerly ruled the German Empire and Kingdom of Prussia, he is also traditionally entitled" Prince of Prussia" with the style of Royal Highness.
Grand Duke Vyacheslav Konstantinovich of Russia
Grand Duke Vyacheslav Konstantinovich of Russia,( 13 July 1862 – 27 February 1879), was a Romanov grand duke and the youngest son of Grand Duke Konstantin Nikolayevich of Russia and his wife Princess Alexandra of Saxe- Altenburg.
The English form of his first name is Wenceslas.
Grand Duke Alexei Mikhailovich of Russia
Grand Duke Alexei Mikhailovich of Russia( Russian: Алексей Михайлович)( 28 December 1875 – 2 March 1895) was the sixth son and youngest child of Grand Duke Michael Nicolaievich of Russia and a first cousin of Alexander III of Russia.
He was destined to follow a career in the Russian Navy, but he died in his youth of tuberculosis.
Grand Duke Michael Nikolaevich of Russia
Grand Duke Michael Nikolaevich of Russia (25 October 1832 – 18 December 1909) was the fourth son and seventh child of Tsar Nicholas I of Russia and Charlotte of Prussia.
He was the first owner of the New Michael Palace on the Palace Quay in Saint Petersburg.
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Anastasia de Torby
Countess Anastasia Mikhailovna of Torby, CBE (9 September 1892 – 7 December 1977), otherwise styled Lady Zia Wernher, was the elder daughter of Grand Duke Michael Mikhailovich of Russia, a grandson of Tsar Nicholas I of Russia, by Countess Sophie of Merenberg.

Question: Who is the paternal grandfather of Grand Duke George Mikhailovich Of Russia (1863–1919)?
Answer: Nicholas I of Russia