Maria Luisa of Parma
Maria Luisa of Parma (9 December 1751 – 2 January 1819) was Queen consort of Spain from 1788 to 1808 by marriage to King Charles IV of Spain.
She was the youngest daughter of Philip, Duke of Parma, the fourth son of Philip V of Spain and Louise Élisabeth of France, the eldest daughter of King Louis XV.
José Presas y Marull
José Presas y Marull( ?- 1842) attorney, writer, politician, diplomat and historian of Catalan origin.
He served as private secretary of Carlota Joaquina of Spain.
Carlota Joaquina of Spain
Doña Carlota Joaquina of Spain ("Carlota Joaquina Teresa Cayetana";
25 April 1775 – 7 January 1830), was by birth a member of the Spanish branch of the House of Bourbon and Infanta of Spain and by marriage Queen consort of Portugal.
Eldest daughter of King Charles IV of Spain and Maria Luisa of Parma, she was married in May 1785 aged 10 with Infante John, Lord of the Infantado and Duke of Beja, second son of Queen Maria I of Portugal, in an attempt to cement ties between the Kingdoms of Spain and Portugal.
Detested by the Portuguese court — where she was called "the Shrew of Queluz"  — Carlota Joaquina also gradually won the antipathy of the people, who accused her of promiscuity and influencing her husband in favor of the interests of the Spanish crown.
After the escape of the Portuguese court to Brazil, Carlota Joaquina began conspiring against her husband, claiming that he had no mental capacity to govern Portugal and its possessions, thus wanting to establish a regency.
Ambitious, she also planned to usurp the Spanish crown that was in the hands of Napoleon's brother Joseph Bonaparte.
After the marriage in 1817 of her son Pedro with the Archduchess Leopoldina of Austria and the later return of the royal family to Portugal in 1821, Carlota Joaquina was confined in the Royal Palace of Queluz, where she died alone and abandoned by her children on 7 January 1830.
After her death, Carlota Joaquina (mainly in Brazil) became part of popular culture and an important historical figure, being the subject of several books, films and other media.
Some scholars believe that she has had a rough and superficial behavior, attributing to her the fact that she hated Brazil.
Maria Teresa, Princess of Beira
Infanta Maria Teresa of Braganza( or; 29 April 1793 – 17 January 1874) was the firstborn child of John VI of Portugal and Carlota Joaquina of Spain, and heir presumptive to the throne of Portugal between 1793 and 1795, until her short- lived brother António Pio was born.
Infanta Isabel Maria of Braganza
Infanta Isabel Maria of Braganza; Queluz, 4 July
1801 – Benfica, then Belém, 22 April 1876 was a Portuguese" infanta"( princess) daughter of King John VI of Portugal and his wife Carlota Joaquina of Spain.
She acted as regent for two years.
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.
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.
Infanta Ana de Jesus Maria of Braganza
Infanta Ana de Jesus Maria of Braganza( Mafra, 23 October 1806 – Rome, 22 June 1857) was a Portuguese" infanta" and youngest daughter of King John VI and his wife, Carlota Joaquina of Spain.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
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 Carlota Joaquina Of Spain?
Answer: Louise Élisabeth of France