John Sobieslaw of Moravia
John Sobieslaw of Moravia (1352 - c. 30 October 1380) was a Czech feudal lord, junior margrave of Moravia.
John was the third son of John Henry, Margrave of Moravia and Margaret of Opava.
In historiography, he was mistaken for his illegitimate half-brother patriarch of Aquileia John of Moravia, for a long time.
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.
Margaret of Opava
Margaret of Opava
(Czech: "Markéta Opavská", Silesian: "Margaret s Uopawje", German: "Margaret von Troppau", Polish: "Małgorzata opawska"; 1330–1363) was the youngest daughter of Nicholas II of Opava, (grandson of Přemysl II, Otakar, King of Bohemia) and his third wife Anna of Racibórz.
She became Margravine consort of Moravia by her marriage to John Henry of Moravia (1353).
Margaret was buried in Saint Thomas, Brno.
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.
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.
Elisabeth of Moravia
Elizabeth of Moravia
(German: "Elisabeth von Mähren",
Czech: "Alžběta Moravská", Upper Sorbian: "Hilžbjeta Morawska", c. 1355 – 20 November 1400) was the second daughter and third issue of John Henry of Moravia, (grandson of Přemysl II, Otakar, King of Bohemia) and his second wife Margaret of Opava.
She became Margravine consort of Meissen by her marriage to William I, Margrave of Meissen (1366).
Elizabeth was buried in Prince's Chapel of St. John and St. Donatus Cathedral of Meissen.
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.
Louisa Cavendish-Bentinck
Caroline Louisa Cavendish- Bentinck( née Burnaby; 5 December 1832 – 6 July 1918) was the maternal grandmother of Queen Elizabeth The Queen Mother and the great- grandmother of Elizabeth II.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.

Question: Who is the maternal grandmother of Elisabeth Of Moravia?
Answer: Anna of Racibórz