Archduchess Maria Carolina of Austria (1740–1741)
Archduchess Maria Carolina of Austria (
Maria Carolina Ernestina Antonia Johanna Josefa; 12 January 1740 – 25 January 1741), was the third child and daughter of Archduchess Maria Theresa of Austria, later Holy Roman Empress and Duke Francis of Lorraine.
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.
Mona Hopton Bell
Mona Hopton Bell( 1867- 1940) was a British artist, best known for her portraits of civic figures.
She was the grandmother of the painter Jean H. Bell.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
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.
Anne Denman
Anne Denman( 1587–1661) was born in Olde Hall, Retford, Nottinghamshire.
Through a fortunate second marriage with Thomas Aylesbury, she became the grandmother of Lady Anne Hyde, Duchess of York and great- grandmother of Queen Mary II and Queen Anne.
Archduchess Maria Theresa of Austria (1862–1933)
Archduchess Maria Theresa of Austria  (18 September 1862, Alt-Bunzlau, Bohemia, Austrian Empire –
10 May 1933, Schloss Saybusch, Saybusch, Poland) was a member of the House of Habsburg-Tuscany and Archduchess of Austria, Princess of Tuscany by birth.
Maria Theresia was the eldest child and eldest daughter of Archduke Karl Salvator of Austria and his wife, Princess Maria Immaculata of Bourbon-Two Sicilies.
Kaoru Hatoyama
After the elections of 2009, she became more widely known as the grandmother of Prime Minister Yukio Hatoyama and his politician brother Kunio Hatoyama.
Archduchess Immaculata of Austria
Archduchess Immaculata of Austria ;(9 September 1892 – 3 September 1971) was a daughter of Archduke Leopold Salvator of Austria.
She was member of the Tuscan branch of the Imperial House of Habsburg, an Archduchess of Austria and Princess of Tuscany by birth.
After the fall of the Austro Hungarian Empire, she lived in exile, first in Barcelona and from the 1930s until the end of her life in Italy.
In 1932, she married an Italian aristocrat, Igino Neri-Serneri.
The couple remained childless.
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.

Question: Who is Archduchess Immaculata Of Austria's paternal grandmother?
Answer: Princess Maria Immaculata of Bourbon-Two Sicilies