Teriimaevarua III
Ari'i-Otare Terii-maeva-rua III Pomare (28 May 1871 – 19 November 1932) was the last Queen of the Tahitian island of Bora Bora from 1873 to 1895.
The second daughter of Prince Tamatoa-a-tu (Tamatoa V),
King of Raiātea and Tahaa and Princess Moe-a-Mai, Arii-Otare became the Queen of Bora Bora on the death of her aunt Princess Teari'i-maeva-rua
I Pomare, Queen of Bora Bora.
She married Prince Teri'i Hinoi-a-tua
Pomare, chief of Hitia'a in Bora Bora on 9 January 1884 and was divorced in 1887.
Ari'i-'Otare produced no children of her own, so adopted her two younger step daughters; Princess Rehu-rehu Tuheiava and Princess Itia Tuheiava.
Bora Bora was annexed by the French on 19 March 1888, but royal power remained in effect until her abdication on 21 September 1895.
She remained the head of the royal house of Bora Bora until her death.
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.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
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.
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.
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.
Tamatoa V
Tamatoa V, born Tamatoa-a-tu Pōmare, (23 September 1842, Moorea – 30 September 1881, Pape'ete), King of Raiatea and Taha'a, was a son of Queen Pōmare IV of Tahiti.
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 Teriimaevarua Iii's paternal grandmother?
Answer: Pōmare IV