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.
Philippe, Duke of Anjou
Philippe of France, Duke of Anjou (30 August 1730 – 7 April 1733) was a French prince and the second son of king Louis XV of France and Marie Leszczyńska.
He was styled Duke of Anjou from birth.
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.
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.
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.
Marie Leszczyńska
Maria Karolina Zofia Felicja Leszczyńska (23 June 1703 – 24 June 1768), also known as Marie Leczinska , was a Polish princess and French queen consort.
The daughter of King Stanisław Leszczyński—Stanislaus I of Poland (later Duke of Lorraine)–and Catherine Opalińska, she married King Louis XV of France and became queen consort of France.
She served in that role for 42 years from 1725 until her death in 1768, the longest service of any queen of France, and was popular due to her generosity and piety.
She was the grandmother of Louis XVI, Louis XVIII and Charles X of France.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
Philippe, Chevalier de Lorraine
Philippe of Lorraine( 1643 – 8 December 1702), known as the Chevalier de Lorraine, was a French nobleman and member of the House of Guise, cadet of the Ducal House of Lorraine.
He was the renowned lover of Philippe I, Duke of Orléans, brother of Louis XIV.
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.
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.

Question: Who is Philippe, Duke Of Anjou's maternal grandmother?
Answer: Catherine Opalińska