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.
Duchess Louise Charlotte of Mecklenburg-Schwerin
Duchess Louise Charlotte of Mecklenburg- Schwerin( 19 November 1779 – 4 January 1801) was the maternal grandmother of Prince Albert, husband of Queen Victoria of the United Kingdom.
Louise Charlotte was born Duchess of Mecklenburg- Schwerin, her father being Friedrich Franz I, Grand Duke of Mecklenburg- Schwerin.
Her mother was Princess Louise of Saxe- Gotha- Altenburg; her sister Charlotte of Mecklenburg- Schwerin( 1784–1840) married King Christian VIII of Denmark.
Duchess Gustave Caroline of Mecklenburg-Strelitz
Duchess Gustave Caroline of Mecklenburg- Strelitz( 12 July 1694 – 13 April 1748) was a daughter of Adolphus Frederick II, Duke of Mecklenburg and Princess Maria of Mecklenburg.
Princess Alexandrine of Prussia (1803–1892)
Princess Alexandrine of Prussia (23 February 1803 – 21 April 1892) was Grand Duchess of Mecklenburg-Schwerin by marriage to Paul Frederick, Grand Duke of Mecklenburg-Schwerin.
She was the daughter of Frederick William III of Prussia and Louise of Mecklenburg-Strelitz.
Irina Mikhailovna Raievskya
Irina Mikhailovna Raievskya( 18 August 1892 – 22 January 1955), was a Russian and German noble.
She was Duchess of Mecklenburg by her marriage to her second husband, George, Duke of Mecklenburg, who was the head of the House of Mecklenburg- Strelitz from 1934 until his death in 1963.
Irina is the great- grandmother of Sophie, Princess of Prussia, wife of Georg Friedrich, Prince of Prussia, current head of the House of Hohenzollern.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
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.
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.
John VI, Duke of Mecklenburg
John VI, Duke of Mecklenburg( 1439 – 1474) was a Duke of Mecklenburg.
Duke William of Mecklenburg-Schwerin
Willem of Mecklenburg-Schwerin (Ludwigsburg, 5 March 1827 - Heidelberg, 28 July 1879), was the second son of Hereditary Grand Duke Paul Friedrich of Mecklenburg and his wife Princess Alexandrine of Prussia, daughter of Frederick William III.

Question: Who is Duke William Of Mecklenburg-Schwerin's maternal grandmother?