Tjuyu
Tjuyu( sometimes transliterated as Thuya or Thuyu) was an Egyptian noblewoman and the mother of queen Tiye, and the wife of Yuya.
She is the grandmother of Akhenaten, and great grandmother of Tutankhamun.
Archduchess Maria Antonia of Austria (1899–1977)
Archduchess Maria Antonia of Austria (13 July 1899 – 22 October 1977) was a daughter of Archduke Leopold Salvator of Austria and Infanta Blanca of Spain.
She was member of the Tuscan branch of the Imperial House of Habsburg, an Archduchess of Austria and Princess of Tuscany by birth.
In 1919, after the fall of the Austro Hungary Empire, she moved with her family to Spain.
In 1924 she married Ramón de Orlandis y Villalonga, a Spanish aristocrat.
When she became a widow during the Spanish civil war Archduchess Maria Antonia moved permanently to South America where she remarried.
Maria Chiara Spinucci
Maria Chiara Spinucci( 1741–1792), was an Italian aristocrat, courtier of Duchess Maria Antonia of Bavaria and the morganatic spouse of Prince Francis Xavier of Saxony.
Maria Antonia of Austria
Maria Antonia of Austria (Maria Antonia Josepha Benedicta Rosalia Petronella; 18 January 1669 – 24 December 1692) was an Electress of Bavaria by marriage to Maximilian II Emanuel, Elector of Bavaria.
She was the eldest daughter and only surviving child of Holy Roman Emperor Leopold I and his wife Margaret Theresa of Spain.
She was the heir to the Spanish throne after her maternal uncle Charles II of Spain from 1673 until her death.
Archduchess Maria Antonia of Austria (1858–1883)
Archduchess Maria Antonia of Austria, Princess of Tuscany ("Maria Antonia Leopoldina Annunciata Anna Amalia Josepha Johanna Thelka"; 10 January 1858 – 13 April 1883) was a member of the House of Habsburg-Lorraine.
She served as the Princess-Abbess of the Theresian Royal and Imperial Convent in Hradčany from 1881 until her death in 1883.
Joseph Ferdinand of Bavaria
Joseph Ferdinand Leopold of Bavaria( 28 October 1692 – 6 February 1699) was the son of Maximilian II Emanuel, Elector of Bavaria( 1679 – 1705, 1714 – 1726) and his first wife, Maria Antonia of Austria, daughter of Leopold I, Holy Roman Emperor, maternal granddaughter of King Philip IV of Spain.
Princess Maria Antonia of Parma
Maria Antonia of Parma (Maria Antonia Giuseppa Walburga Anna Luisa Vicenza Margherita Caterina; 28 November 1774 – 20 February 1841) was a Princess of Parma, daughter of Duke Ferdinand I of Parma and his wife, Archduchess Maria Amalia of Austria.
Contrary to what has been frequently stated, she was not named after her aunt, Queen Marie Antoinette of France, who was not her godmother.
Maria Antonia's godparents were her uncle, Emperor Joseph II, and her father's aunt, Maria Antonia of Spain, Queen of Sardinia, after whom the princess was named.
Hubba bint Hulail
Hubba bint Hulail was the grandmother of Hashim ibn' Abd Manaf, thus the great- great- great- grandmother of the Islamic" Nabī"( Prophet) Muhammad ibn Abdullah.
Princess Maria Antonia of Naples and Sicily
Maria Antonia of Naples and Sicily( 14 December 1784 – 21 May 1806), was the youngest daughter of Ferdinand, King of Naples and Sicily, and Maria Carolina of Austria.
As the wife of the future Ferdinand VII of Spain, then heir apparent to the Spanish throne, she held the title of Princess of Asturias.
Archduke Leopold Salvator of Austria
Archduke Leopold Salvator, Prince of Tuscany
(Leopold Salvator Maria Joseph Ferdinand Franz von Assisi Karl Anton von Padua Johann Baptist Januarius Aloys Gonzaga Rainer Wenzel Galius von Österreich-Toskana)
(15 October 1863 – 4 September 1931), was the son of Archduke Karl Salvator of Austria and Princess Maria Immaculata of Bourbon-Two Sicilies.

Question: Who is the paternal grandmother of Archduchess Maria Antonia Of Austria (1899–1977)?
Answer: Princess Maria Immaculata of Bourbon-Two Sicilies