James Thiérrée
James Spencer Henry Edmond Marcel Thierrée (born 2 May 1974 in Lausanne, Switzerland) is a Swiss circus performer, violinist, actor and director who is best known for his theatre performances which blend contemporary circus, mime, dance, and music.
He is the son of circus performers
Victoria Chaplin and Jean-Baptiste Thierrée, the grandson of filmmaker Charlie Chaplin and the great-grandson of playwright Eugene O'Neill.
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.
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.
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.
Purnima (Hindi actress)
Purnima Das Verma( born Meherbhano Mohammad Ali) was an Indian film actress who worked predominantly in Hindi language films.
She is the grandmother of actor Emraan Hashmi.
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.
Victoria Chaplin
Victoria Chaplin (born May 19, 1951) is a British-American circus performer.
She is the daughter of film actor and comedian Charlie Chaplin from his fourth wife, Oona O'Neill, and the granddaughter of playwright Eugene O'Neill.
Chaplin was born in the United States, but grew up in Switzerland.
As a teenager, she appeared as an extra in her father's last film, "A Countess from Hong Kong" (1966).
Her father also wanted her to star in the main role of a winged girl found from the Amazonian rainforest in his next planned film, "The Freak", in 1969.
However, the project was never filmed because of his declining health and because Victoria eloped with the French actor Jean-Baptiste Thierrée.
Chaplin and Thierrée had first come into contact after he read about Chaplin's aspiration of becoming a circus clown in a magazine article of her father, and asked her to form a new type of circus with him.
Soon after their elopement they briefly appeared as two clowns in Federico Fellini's "The Clowns" (1970), and the next year performed for the first time with the contemporary circus "Le Cirque Bonjour", which they had founded together, at Festival d'Avignon.
In 1974, they founded a new, smaller circus, "Le Cirque Imaginaire", which centered only on their, and occasionally their children's, performances, and from 1990 onwards have performed under the name "Le Cirque Invisible".
Chaplin and Thierrée have two children, Aurélia Thierrée, (born 24 September 1971), and James Thierrée, (born 2 May 1974), who are also performing artists.
In addition to performing in "Le Cirque Invisible", Chaplin has also helped in creating her children's shows, and in 2006 was awarded the French national theatre prize, the Molière Award, for designing the costumes for her son's show, "The Junebug Symphony".
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
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.
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.

Question: Who is James Thiérrée's maternal grandmother?
Answer: Oona O'Neill