Prince Erik, Count of Rosenborg
Prince Erik, Count of Rosenborg
(Erik Frederik Christian Alexander; 8 November 1890 – 10 September 1950) was a Danish prince.
He was born in Copenhagen, a son of Prince Valdemar of Denmark and Princess Marie of Orléans.
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.
Prince Valdemar of Denmark
Prince Valdemar of Denmark, (27 October 1858 – 14 January 1939) was the third son and youngest child of Christian IX and Louise of Hesse-Kassel.
He had a lifelong naval career.
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.
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.
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.
Countess Anne Dorte of Rosenborg
Countess Anne Dorte of Rosenborg( née Anne Dorte Maltoft- Nielsen; 3 October 1947 – 2 January 2014) was a Danish countess.
She was the wife of Count Christian of Rosenborg, the grandson of King Christian X of Denmark.
Prince Christian had to give up his princely rank in order to marry her because she was a commoner.
The couple married on 7 February 1971, earning her the title" Her Excellency Countess Anne Dorte of Rosenborg".
Since 1991, Anne Dorte and Christian of Rosenborg resided in a detached classical wing of the royal palace Sorgenfri in Lyngby near Copenhagen.
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.

Question: Who is Prince Erik, Count Of Rosenborg's paternal grandmother?