Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
Princess Feodora of Leiningen
Princess Feodora of Leiningen (Anna Feodora Auguste Charlotte Wilhelmine; 7 December 1807 – 23 September 1872) was the only daughter of Emich Carl, Prince of Leiningen (1763–1814), and Princess Victoria of Saxe-Coburg-Saalfeld (1786–1861).
Feodora and her older brother Carl, 3rd Prince of Leiningen, were maternal half-siblings to Queen Victoria of the United Kingdom.
She is a matrilineal ancestress of Carl XVI Gustaf of Sweden and of Felipe VI of Spain.
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.
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.
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.
Hermann, Prince of Hohenlohe-Langenburg
Hermann Ernst Franz Bernhard, Prince of Hohenlohe-Langenburg (31 August 1832 – 9 March 1913) was the 6th Prince of Hohenlohe-Langenburg and the second son of Ernst I, Prince of Hohenlohe-Langenburg and Princess Feodora of Leiningen (half-sister of Queen Victoria).
He succeeded to the title of Prince of Hohenlohe-Langenburg ("Fürst zu Hohenlohe-Langenburg") on 21 April 1860, when his elder brother signed over his rights to the throne.
He died on 9 March 1913 in Langenburg, Kingdom of Württemberg, German Empire (present-day Baden-Württemberg, Germany).
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.
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.
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.

Question: Who is Hermann, Prince Of Hohenlohe-Langenburg's maternal grandmother?