Princess Marie Melita of Hohenlohe-Langenburg
Princess Marie Melita of Hohenlohe-Langenburg (18 January 1899, Langenburg, Württemberg – 8 November 1967, Munich, Germany) was the Duchess consort of Schleswig-Holstein as the wife of Wilhelm Friedrich, Duke of Schleswig-Holstein.
She was the eldest daughter of Ernst II, Prince of Hohenlohe-Langenburg and his wife Princess Alexandra of Saxe-Coburg and Gotha.
Christian Albrecht, Prince of Hohenlohe-Langenburg
Christian Albrecht, 2nd Prince of Hohenlohe- Langenburg( 27 March 1726 in Langenburg – 4 July 1789 in Ludwigsruhe), was the second ruling Prince of Hohenlohe- Langenburg and a Dutch lieutenant- general.
He was the first child of Ludwig, Prince of Hohenlohe- Langenburg and Countess Eleonore of Nassau- Saarbrücken.
On 7 January 1764, his father was elevated to an Imperial Prince by Emperor Francis I.
Philipp, Prince of Hohenlohe-Langenburg
Philipp, 10th Prince of Hohenlohe- Langenburg( Philipp Gottfried Alexander; born 20 January 1970 in Crailsheim, West Germany), is the middle child and only son of Kraft, Prince of Hohenlohe- Langenburg and his first wife, Princess Charlotte of Croÿ.
Upon the death of his father in 2004, he became the titular Prince of Hohenlohe- Langenburg.
He is a grandson of Princess Margarita of Greece and Denmark, and a grandnephew of Prince Philip, Duke of Edinburgh.
Anne, Princess Royal of the United Kingdom is one of his godmothers.
Princess Helene of Hohenlohe-Langenburg
Princess Helene of Hohenlohe- Langenburg( 22 November 1807, Langenburg, Principality of Hohenlohe- Langenburg- 5 September 1880, Schleiz, Thuringia) was a member of the House of Hohenlohe- Langenburg and a Princess of Hohenlohe- Langenburg by birth and a member of the House of Württemberg and a Duchess of Württemberg as the second wife of Duke Eugen of Württemberg
Kraft, Prince of Hohenlohe-Langenburg
Kraft, 9th Prince of Hohenlohe- Langenburg( 25 June 1935 – 16 March 2004) was the eldest son of Gottfried, Prince of Hohenlohe- Langenburg.
He was the titular Prince of Hohenlohe- Langenburg from 1960 until his death.
Gottfried, Prince of Hohenlohe-Langenburg
Gottfried, 8th Prince of Hohenlohe- Langenburg( 24 March 189711 May 1960) was the only surviving son of Ernst II, Prince of Hohenlohe- Langenburg.
Carl Ludwig II, Prince of Hohenlohe-Langenburg
Carl Ludwig II, 5th Prince of Hohenlohe- Langenburg( 25 October 182916 May 1907), was the eldest son of Ernst I, Prince of Hohenlohe- Langenburg.
He was the fifth Prince of Hohenlohe- Langenburg.
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).
Princess Alexandra of Saxe-Coburg and Gotha
Princess Alexandra of Saxe-Coburg and Gotha, , (Alexandra Louise Olga Victoria; 1 September 1878 – 16 April 1942), was the fourth child and third daughter of Alfred, Duke of Saxe-Coburg and Gotha and Grand Duchess Maria Alexandrovna of Russia.
She was a granddaughter of Queen Victoria of the United Kingdom as well as of Tsar Alexander II of Russia.
Princess Agnes of Hohenlohe-Langenburg
Princess Marie" Agnes" Henriette of Hohenlohe- Langenburg, full German name:" Marie Agnes Henriette, Prinzessin zu Hohenlohe- Langenburg"( 5 December 1804, Langenburg, Principality of Hohenlohe- Langenburg – 9 September 1835, Haid, Kingdom of Bohemia, Austrian Empire) was a member of the House of Hohenlohe- Langenburg and a Princess of Hohenlohe- Langenburg by birth.
Through her marriage to Constantine, Hereditary Prince of Löwenstein- Wertheim- Rosenberg, Agnes was also a member of the House of Löwenstein- Wertheim- Rosenberg and Hereditary Princess of Löwenstein- Wertheim- Rosenberg.
Through her daughter Adelaide of Löwenstein- Wertheim- Rosenberg, Agnes is an ancestor to numerous Roman Catholic European royal families.

Question: Who is the maternal grandfather of Princess Marie Melita Of Hohenlohe-Langenburg?
Answer: Alfred