Question: Who is the maternal grandmother of Alfred, Duke Of Saxe-Coburg And Gotha?

Context paragraphs:
title: Kaoru Hatoyama
paragraph_text: After the elections of 2009, she became more widely known as the grandmother of Prime Minister Yukio Hatoyama and his politician brother Kunio Hatoyama.
title: Queen Victoria
paragraph_text: Victoria (Alexandrina Victoria; 24 May 1819 – 22 January 1901) was Queen of the United Kingdom of Great Britain and Ireland from 20 June 1837 until her death. On 1 May 1876, she adopted the additional title of Empress of India. Known as the Victorian era, her reign of 63 years and seven months was longer than that of any of her predecessors. It was a period of industrial, cultural, political, scientific, and military change within the United Kingdom, and was marked by a great expansion of the British Empire. Victoria was the daughter of Prince Edward, Duke of Kent and Strathearn (the fourth son of King George III), and Princess Victoria of Saxe-Coburg-Saalfeld. After both the Duke and his father died in 1820, she was raised under close supervision by her mother and her comptroller, John Conroy. She inherited the throne aged 18 after her father's three elder brothers died without surviving legitimate issue. The United Kingdom was an established constitutional monarchy in which the sovereign held relatively little direct political power. Privately, she attempted to influence government policy and ministerial appointments; publicly, she became a national icon who was identified with strict standards of personal morality. Victoria married her cousin Prince Albert of Saxe-Coburg and Gotha in 1840. Their children married into royal and noble families across the continent, earning Victoria the sobriquet "the grandmother of Europe" and spreading haemophilia in European royalty. After Albert's death in 1861, Victoria plunged into deep mourning and avoided public appearances. As a result of her seclusion, republicanism in the United Kingdom temporarily gained strength, but in the latter half of her reign, her popularity recovered. Her Golden and Diamond Jubilees were times of public celebration. She died on the Isle of Wight in 1901. The last British monarch of the House of Hanover, she was succeeded by her son Edward VII of the House of Saxe-Coburg and Gotha.
title: Hannah Arnold
paragraph_text: Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
title: Anne Denman
paragraph_text: 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.
title: Tjuyu
paragraph_text: 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.
title: Gülbahar Hatun (wife of Mehmed II)
paragraph_text: 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.
title: Alfred, Duke of Saxe-Coburg and Gotha
paragraph_text: Alfred( Alfred Ernest Albert; 6 August 184430 July 1900) reigned as Duke of Saxe- Coburg and Gotha from 1893 to 1900. He was the second son and fourth child of Queen Victoria of the United Kingdom and Prince Albert of Saxe- Coburg and Gotha. He was known as the Duke of Edinburgh from 1866 until he succeeded his paternal uncle Ernest II as the reigning Duke of Saxe- Coburg and Gotha in the German Empire.
title: Hüma Hatun
paragraph_text: 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.
title: Mona Hopton Bell
paragraph_text: 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.
title: Hubba bint Hulail
paragraph_text: 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.

Reasoning steps:
Alfred mother Queen Victoria
Queen Victoria mother Princess Victoria of Saxe-Coburg-Saalfeld

Answer: spans: Princess Victoria of Saxe-Coburg-Saalfeld