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.
Gülbahar Hatun (wife of Mehmed II)
Gülbahar Hatun( 1432 – 1492) was the consort of Sultan Mehmed II, and mother of Sultan Bayezid II of the Ottoman Empire and the grandmother of Selim I.
Hüma Hatun
Hüma Hatun (1410 ‒ September 1449) was the fourth wife of Ottoman Sultan Murad II and mother of Mehmed II and the grandmother of Bayezid II.
Laura Lopes
Laura Rose Lopes (née Parker Bowles; born 1 January 1978) is an English art curator.
She is the daughter of Camilla, Duchess of Cornwall, and Andrew Parker Bowles, and the stepdaughter of Charles, Prince of Wales.
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.
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.
Camilla, Duchess of Cornwall
Camilla, Duchess of Cornwall, (born Camilla Rosemary Shand, later Parker Bowles; 17 July 1947) is a member of the British royal family.
She is the second wife of Charles, Prince of Wales, heir apparent to the British throne.
Instead of using the title Princess of Wales, she uses the title Duchess of Cornwall, her husband's secondary designation.
In Scotland, she is known as the Duchess of Rothesay.
Camilla is the eldest child of Major Bruce Shand and his wife Rosalind Cubitt, the daughter of Roland Cubitt, 3rd Baron Ashcombe.
She was raised in East Sussex and South Kensington in England, and was educated in England, Switzerland, and France.
In 1973, Camilla married British Army officer Andrew Parker Bowles, with whom she has two children.
They divorced in 1995.
Camilla was periodically romantically involved with the Prince of Wales both before and during their first marriages.
The relationship became highly publicised in the media and attracted worldwide scrutiny.
In 2005, it culminated in a civil marriage at Windsor Guildhall, which was followed by a televised Anglican blessing at St George's Chapel, Windsor Castle.
As Duchess of Cornwall, Camilla assists the Prince of Wales on his official duties.
She is also the patron, president and a member of numerous charities and organisations.
Since 1994, she has taken action on osteoporosis, earning honours and awards.
She has also raised awareness in areas including rape and sexual abuse, literacy, animal welfare and poverty.
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.

Question: Who is Laura Lopes's maternal grandmother?
Answer: Rosalind Cubitt