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.
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.
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.
Louisa Montagu Douglas Scott, Duchess of Buccleuch
Louisa Jane Montagu Douglas Scott, Duchess of Buccleuch and Queensberry( 26 August 1836 – 16 March 1912) was the daughter of James Hamilton, 1st Duke of Abercorn.
In 1884, she became the Duchess of Buccleuch and Duchess of Queensberry, the wife of William Henry Walter Montagu Douglas Scott, 6th Duke of Buccleuch& 8th Duke of Queensberry.
She was the paternal grandmother of Princess Alice, Duchess of Gloucester and of Marian Louisa, Lady Elmhirst, as well as the maternal great- grandmother of Prince William of Gloucester, Prince Richard, Duke of Gloucester and great- great- grandmother of Sarah, Duchess of York.
Diana Guardato
Diana Guardato was a member of the aristocratic Patrician Guardato family, and had three children with King Ferdinand I: Diana Guardato is the 16th- Great Grandmother of His Royal Highness Albert II of Belgium, 15th- Great Grandmother of His Majesty Juan Carlos
I of Spain, 17th- Great Grandmother of Philippe of Belgium, 14th- Great Grandmother of His Majesty Manuel II of Portugal, 16th- Great Grandmother of Grand Duke Henri, as well as many others.
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.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
Infante Juan, Count of Barcelona
Infante Juan of Spain, Count of Barcelona ("Juan Carlos Teresa Silverio Alfonso de Borbón y Battenberg"; 20 June 1913 – 1 April 1993), also known as Don Juan, was the third son and designated heir of King Alfonso XIII of Spain and Victoria Eugenie of Battenberg.
His father was replaced by the Second Spanish Republic, and under his son, Juan Carlos I, a constitutional monarchy was restored.
Laura Ponte
Laura Ponte y Martínez( born 9 June 1973 in Vigo) is a Spanish model, daughter of José Manuel Ponte Mittelbrunn( born 1942) and wife Marcela Martínez Zapico( born ca. 1945).
She entered the fashion industry in 1993, and has worked for Valentino, Lagerfeld, and Ralph Lauren, among others.
She married Luis Beltrán Ataulfo Alfonso Gómez- Acebo y Borbón( b. Madrid, 20 May 1973) on 18 September 2004, at La Granja de San Ildefonso, in Segovia.
Her husband is the son of Infanta Pilar, Duchess of Badajoz, and the nephew of King Juan Carlos I of Spain.
They have two children, Luis Felipe and Laura.
The couple reportedly separated in May 2010.
Infanta Pilar, Duchess of Badajoz
Infanta Pilar of Spain, Duchess of Badajoz, Dowager Viscountess of la Torre
(Spanish: "María del Pilar Alfonsa Juana Victoria Luisa Ignacia y Todos
los Santos de Borbón y Borbón-Dos Sicilias"; born 30 July 1936), sometimes known more simply as Pilar de Borbón is the elder daughter of Infante Juan, Count of Barcelona and Princess María Mercedes of Bourbon-Two Sicilies, and older sister of King Juan Carlos I. She
has also a younger sister, Infanta Margarita of Spain.

Question: Who is Infanta Pilar, Duchess Of Badajoz's paternal grandmother?
Answer: Victoria Eugenie of Battenberg