Prince Eduard Franz of Liechtenstein
Prince Eduard Franz of Liechtenstein( Eduard Franz Ludwig; 22 February 1809 – 27 June 1864) was a son of Johann I Joseph, Prince of Liechtenstein( 1802 – 1887) and wife Landgravine Josepha of Fürstenberg- Weitra, nephew of Aloys I, brother of Aloys II and uncle of Johann II and Franz I. Prince Eduard Franz was born in Vienna.
Princess Marie of Liechtenstein (b. 1959)
Princess Marie of Liechtenstein(" née" Princess Marie Isabelle Marguerite Anne Geneviève of Orléans; born Boulogne- Billancourt, France on 3 January 1959) is the eldest daughter of Prince Henri, Count of Paris, Duke of France and his former wife Duchess Marie Thérèse of Württemberg.
She is the wife of Prince Gundakar of Liechtenstein, a great- grandson of Prince Alfred of Liechtenstein.
Prince Louis of Liechtenstein
Prince Aloys Franz de Paula Maria( 18 November 1846 – 25 March 1920), known in English as Prince Louis, was the son of Prince Franz de Paula of Liechtenstein( 1802 – 1887) and younger brother of Prince Alfred of Liechtenstein.
He was the cousin of Johann II, Prince of Liechtenstein.
He was nicknamed" The Red Princeder rote Prinz").
Prince Aloys of Liechtenstein
Prince Aloys of Liechtenstein( Aloys Gonzaga Maria Adolf; 17 June 1869 in Hollenegg – 16 March 1955 in Vaduz) was the son of Prince Alfred of Liechtenstein( 1842–1907) and Princess Henriette of Liechtenstein( 1843 – 1931), daughter of Alois II of Liechtenstein.
The maternal nephew and first cousin of Franz I of Liechtenstein, Prince Aloys renounced his rights to the succession on 26 February 1923, in favor of his son Franz Joseph II.
He was the 1,177th Knight of the Order of the Golden Fleece in Austria.
Prince Alfred of Liechtenstein
Prince Alfred Louis of Liechtenstein( Alfred Aloys Eduard; 11 June 1842 in Prague – 8 October 1907 in Frauenthal castle) was the son of Prince Franz de Paula of Liechtenstein( 1802 – 1887) and Countess Julia Eudoxia Potocka- Piława( 1818–1895), older brother of Prince Louis of Liechtenstein, and cousin and brother- in- law of Franz I of Liechtenstein.
He was the 1,143rd Knight of the Order of the Golden Fleece in Austria in 1903.
Johann I Joseph, Prince of Liechtenstein
Johann I Joseph(" Johann Baptist Josef Adam Johann Nepomuk Aloys Franz de Paula"; 26 June 1760 – 20 April 1836) was Prince of Liechtenstein between 1805 and 1806 and again from 1814 until 1836.
He was the last Liechtenstein prince to rule under the Holy Roman Empire between 1805 and 1806 and as regent of Liechtenstein from 1806 until 1814.
He was the fourth son of Franz Joseph I, Prince of Liechtenstein.
Prince Joseph Wenzel of Liechtenstein
Prince Joseph Wenzel of Liechtenstein, Count Rietberg( born 24 May 1995) is the eldest child of Prince Alois of Liechtenstein, the Regent and Hereditary Prince of Liechtenstein, and his wife Princess Sophie of Bavaria, Duchess in Bavaria, he is also the eldest grandchild of the current ruling prince of Liechtenstein.
He is second in the line of succession to the Liechtensteiner throne through his father.
Prince Nikolaus of Liechtenstein
Prince Nikolaus Ferdinand Maria Josef Raphael of Liechtenstein( born 24 October 1947) is the non-resident Ambassador of Liechtenstein to the Holy See and a younger brother of the reigning Prince of Liechtenstein, Hans- Adam II.
Prince Wenzeslaus of Liechtenstein
Prince Wenzeslaus of Liechtenstein (born 12 May 1974) is a member of the princely family of Liechtenstein.
He is the son of Prince Philip Erasmus of Liechtenstein and Isabelle de L'Arbre de Malander.
He was born to the style of a Serene Highness and Prince of Liechtenstein, and is additionally a Count of Rietberg.
Prince Wenzeslaus has two brothers:
Prince Wenzeslaus has become something of a society column figure on account of his relationship with Victoria's Secret model Adriana Lima.
The society columns such as Page Six of the "New York Post" have tagged him with the nickname of "Prince Wence(pronounced: Vince)".
His father is President of the LGT Group in Liechtenstein which is privately owned by the Prince of Liechtenstein Foundation.
Prince Wenzeslaus is the nephew of the reigning sovereign Fürst Hans Adam II and the first cousin of Alois, Hereditary Prince of Liechtenstein, who is Regent since 2004.
Princess Henriette of Liechtenstein
Princess Henriette of Liechtenstein( German:" Henriette Maria Norberta, Prinzessin von und zu Liechtenstein"; 6 June 1843 – 24 December 1931) was a Princess of Liechtenstein and member of the Princely House of Liechtenstein.

Question: Who is the paternal grandfather of Prince Eduard Franz Of Liechtenstein?
Answer: Franz Joseph I