Princess Mathilde of Bavaria (1877–1906)
Princess Mathilde of Bavaria
(Mathilde Marie Theresia Henriette Christine Luitpolda; 17 August 1877 – 6 August 1906) was the sixth child of Ludwig III of Bavaria and his wife, Maria Theresa of Austria-Este.
After her early death, "Life-Dreams:
The Poems of a Blighted Life", a collection of poems she wrote, was published in 1910.
Princess Elisabeth Helene of Thurn and Taxis
Princess Elisabeth Helene of Thurn and Taxis  (15 December 1903, Regensburg, Kingdom of Bavaria – 22 October 1976, Munich, Bavaria, Germany) was a Princess of Thurn and Taxis by birth and a Princess and Duchess of Saxony, Margravine of Meissen, and titular Queen consort of Saxony through her marriage to Friedrich Christian, Margrave of Meissen.
Elisabeth was the sixth child of Albert, 8th Prince of Thurn and Taxis and his wife Archduchess Margarethe Klementine of Austria.
Princess Mathilde of Saxony (born 1936)
Princess Mathilde of Saxony, Duchess of Saxony (17 January 1936 – 18 March 2018) was a Princess of Saxony and member of the House of Wettin by birth and a Princess of Saxe-Coburg and Gotha as consort to Prince Johannes Heinrich of Saxe-Coburg and Gotha.
Mathilde is the fifth and youngest child of Friedrich Christian, Margrave of Meissen and his wife, Princess Elisabeth Helene of Thurn and Taxis, and a younger sister of Maria Emanuel, Margrave of Meissen, the late head of the Royal House of Saxony and senior claimant to the defunct throne of the Kingdom of Saxony.
Maria Emanuel, Margrave of Meissen
Maria Emanuel, Prince of Saxony, Duke of Saxony, Margrave of Meissen( 31 January 1926 – 23 July 2012) was the head of the Royal House of Saxony.
Prince Daniel of Saxony
Prince Daniel Timo of Saxony, Duke of Saxony( born 23 June 1975) is the oldest son of Prince Rüdiger of Saxony, a disputed Head of the Royal House of Saxony.
Princess Margaretha of Saxony
Princess Margaretha of Saxony, Duchess of Saxony( 24 May 1840 – 15 September 1858) was the eighth child and fifth eldest daughter of John of Saxony and his wife Amalie Auguste of Bavaria and a younger sister of Albert of Saxony and George of Saxony.
She was born in Dresden, then in the Kingdom of Saxony.
Through her marriage to Archduke Charles Louis of Austria, Margaretha was a member of the House of Habsburg- Lorraine and an Archduchess and Princess of Austria and Princess of Hungary, Croatia, Bohemia, and Tuscany.
Kaya Alp
Kaya Alp was, according to Ottoman tradition, the son of Kızıl Buğa and the father of Suleyman Shah, who was, in turn, the grandfather of Ertuğrul, and the great grandfather of the Ottoman Empire founder, Osman I.
Princess Mathilde of Saxony (born 1863)
Princess Mathilde of Saxony, Duchess of Saxony (19 March 1863 – 27 March 1933) was the third child and third-eldest daughter of George of Saxony and his wife, Maria Anna of Portugal.
She was an elder sister of the Kingdom of Saxony's last king, Frederick Augustus III of Saxony.
Prince Johann Georg of Saxony
Prince Johann Georg Pius Karl Leopold Maria Januarius Anacletus of Saxony, Duke of Saxony (10 July 1869 – 24 November 1938) was the sixth child and second-eldest son of George of Saxony and his wife Maria Anna of Portugal and a younger brother of the Kingdom of Saxony's last king, Frederick Augustus III of Saxony.
Johann Georg was a well-known arts expert and an avid art collector.
Princess Amalie of Saxony
Amalie Marie Friederike Auguste (10 August 1794 – 18 September 1870), Princess of Saxony, full name
Maria Amalia Friederike Augusta Karolina
Ludovica Josepha
Aloysia Anna Nepomucena Philippina Vincentia Franziska de Paula Franziska de Chantal, was a German composer writing under the pen name "A. Serena", and a dramatist under the name "Amalie Heiter".
She was the daughter of Prince Maximilian of Saxony and Princess Carolina of Parma.
She was the granddaughter of Frederick Christian, Elector of Saxony; niece of Frederick Augustus I, King of Saxony and Anthony, King of Saxony; sister of Frederick Augustus II, King of Saxony and John, King of Saxony; and aunt of Albert, King of Saxony and George, King of Saxony.

Question: Who is Princess Mathilde Of Saxony (Born 1936)'s maternal grandfather?