Sue Douglas
Susan Margaret Douglas( born 29 January 1957) is a British media executive and former newspaper editor.
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.
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.
Margaret Tudor
Margaret Tudor (28 November 1489 – 18 October 1541) was Queen of Scots from 1503 until 1513 by marriage to James IV of Scotland and
then, after her husband died fighting the English, she became regent for their son James V of Scotland from 1513 until 1515.
She was born at Westminster Palace as the eldest daughter of King Henry VII of England and Elizabeth of York, and granddaughter of Margaret Beaufort, Edward IV of England and Queen Elizabeth Woodville.
Margaret Tudor had several pregnancies, but most of her children died young or were stillborn.
As queen dowager she married Archibald Douglas, 6th Earl of Angus.
Through her first and second marriages, respectively, Margaret was the grandmother of both Mary, Queen of Scots, and Mary's second husband, Lord Darnley.
Margaret's marriage in 1503 to James IV linked the royal houses of England and Scotland, which a century later resulted in the Union of the Crowns.
Upon his ascent to the English throne, Margaret's great-grandson, James VI and I, was the first person to be monarch of both Scotland and England.
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.
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.
Margaret Douglas
Margaret Douglas, Countess of Lennox (7 October 1515 – 7 March 1578), was the daughter of the Scottish queen dowager Margaret Tudor and her second husband Archibald Douglas, 6th Earl of Angus.
In her youth she was high in the favour of her uncle, Henry VIII of England, but twice incurred the King's anger, first for her unauthorised engagement to Lord Thomas Howard, who died in the Tower of London in 1537 because of his misalliance with her, and again in 1540 for an affair with Thomas Howard's nephew Sir Charles Howard, the brother of Henry's wife Catherine Howard.
On 6 July 1544, she married Matthew Stewart, 4th Earl of Lennox, one of Scotland's leading noblemen.
Her son Henry Stuart, Lord Darnley, married Mary, Queen of Scots, and was the father of James VI and I.
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.
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 Margaret Douglas's maternal grandmother?
Answer: Elizabeth of York