Maria Elisabetta Carlotta of Savoy
Maria Elisabetta Carlotta of Savoy (16 July 1752 – 17 April 1753) was a Princess of Savoy by birth, and daughter of the king of Sardinia Victor Amadeus III of Savoy and his wife, Maria Antonia Ferdinanda of Spain (daughter of Philip V of Spain).
Yolande Louise of Savoy
Yolande Louise of Savoy( 1487–1499), was a Duchess Consort of Savoy; married to Philibert II, Duke of Savoy.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
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.
Konstancja Lubomirska
Princess Konstancja Lubomirska( ca. 1618–1646) was a Polish noble lady.
Konstancja married Kazimierz Franciszek Czarnkowski on 1 February 1637 in Kraków.
She was the mother of Adam Uriel Czarnkowski, grandmother of Zofia Anna Czarnkowska, Great- grandmother of Katarzyna Opalinska and the great- great- grandmother of Maria Leszczyńska.
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.
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.
Maria Antonia Ferdinanda of Spain
Maria Antonia Ferdinanda of Spain
(María Antonia Fernanda; 17 November 1729 – 19 September 1785) was a Queen consort of Sardinia by marriage to Victor Amadeus III of Sardinia.
She was the youngest daughter of Philip V of Spain and Elisabeth Farnese.
She was the mother of the last three mainline Kings of Sardinia.
Princess Elisabeth of Savoy
Elisabeth of Savoy (Maria Francesca Elisabetta Carlotta Giuseppina; 13 April 1800 – 25 December 1856) was the Vicereine of the Kingdom of Lombardy-Venetia by marriage to Archduke Rainer of Austria.
She was the aunt and mother-in-law of Vittorio Emanuele II, the first king of a united Italy.
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 the maternal grandmother of Maria Elisabetta Carlotta Of Savoy?
Answer: Elisabeth Farnese