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.
Magnus, Duke of Saxony
Magnus (– 23 August 1106) was the duke of Saxony from 1072 to 1106.
Eldest son and successor of Ordulf and Wulfhild of Norway, he was the last member of the House of Billung.
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.
Eilika of Schweinfurt
Eilika of Schweinfurt( c. 1005 – after 10 Dec 1059) was Duchess consort of Saxony.
She came from a Bavarian noble family as the daughter of Margrave Henry of Schweinfurt and Gerberga of Gleiberg( 970 – aft. 1036).
Around 1020, Eilika married Bernard II, Duke of Saxony and was mother of:
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.
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.
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.
Rüdiger, Margrave of Meissen
Prince Rüdiger Charles Ernest Timo Aldi of Saxony, Duke of Saxony, Margrave of Meissen( born 23 December 1953) is a disputed head of the Royal House of Saxony, and the only agnatic( male line or paternal) great- grandson of the last King of Saxony, Frederick Augustus III.
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.
Eilika of Saxony
Eilika of Saxony (– 16 January 1142) was a daughter of Magnus, Duke of Saxony and a member of the Billung dynasty.
Through marriage to Otto of Ballenstedt, she was countess of Ballenstedt.

Question: Who is the paternal grandfather of Eilika Of Saxony?
Answer: Ordulf