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.
Antoinette de Bourbon
Antoinette de Bourbon Duchess of Guise( 25 December 1494 – 22 January 1583) was a French noblewoman of the House of Bourbon.
She was the wife of Claude of Lorraine, Duke of Guise.
Through her eldest daughter, Mary of Guise, she was the maternal grandmother of Mary, Queen of Scots.
Françoise d'Alençon
Françoise d'Alençon (1490 – September 14, 1550) was the eldest daughter of René of Alençon and Margaret of Lorraine, and the younger sister and despoiled heiress of Charles IV, Duke of Alençon.
The sister and heiress of Charles IV of Alençon, she was despoiled of her heritage by her sister-in-law Marguerite of Angoulême, sister of King Francis I of France.
Her son Antoine, however, went on to marry Jeanne III of Navarre, born of the second marriage of Marguerite with Henry II of Navarre.
The grandson of Françoise and Marguerite, Henry de Bourbon, would become King of France and Navarre.
Peter I, Duke of Bourbon
Peter I of Bourbon( 1311 – 19 September 1356, Poitiers) was the second Duke of Bourbon, from 1342 to his death.
Peter was son of Louis I of Bourbon, whom he also succeeded as Grand Chamberlain of France, and Mary of Avesnes.
Duke Peter is reported to have been somewhat mentally unstable, a trait of nervous breakdowns( presumably hereditary) that showed clearly for example in his daughter Joan of Bourbon, the queen, and in her son, king Charles VI of France, as well as in Peter's only surviving son, Duke Louis II.
Mary of Bourbon
Mary of Bourbon or Marie de Bourbon (29 October 1515 – 28 September 1538) was a daughter of Charles, Duke of Vendôme, and Françoise d'Alençon, daughter of René, Duke of Alençon.
Mary was the subject of marriage negotiations of James V of Scotland.
He visited her in France, but subsequently married Madeleine of Valois.
Mary died two years later.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
Beatrice of Bourbon, Queen of Bohemia
Beatrice of Bourbon( 1320 – 23 December 1383) was a French noblewoman.
A member of the House of Bourbon, she was by marriage Queen of Bohemia and Countess of Luxembourg.
She was the youngest daughter of Louis I, Duke of Bourbon, and Mary of Avesnes.
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.
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.
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 Mary Of Bourbon's maternal grandmother?
Answer: Margaret of Lorraine