Samuel Sherman
Samuel Sherman( 1871 – 1948) was the court composer and conductor for Emperor Franz Josef I of the Austro- Hungarian Empire between 1903 and 1909.
Archduke Franz Josef of Austria, Prince of Tuscany
Archduke Franz Josef of Austria- Tuscany (born in Vienna 4 February 1905 - died Hernstein, Austria 9 May 1975) was the fourth son of Archduke Leopold Salvator, Prince of Tuscany and Infanta Blanca of Spain.
At the fall of Habsburg monarchy he moved to Barcelona, where he became a naturalized Spanish citizen.
He married morganatically twice and had a daughter from his second marriage.
During World War II he lived in the United States, working in the forestry industry.
In 1955 he returned to Austria.
He inherited the Carlist pretensions to the Spanish throne of his brother Archduke Karl Pius and called himself Duke of Madrid.
He died in 1975.
Cvjetko Popović
Cvjetko Popović( Serbian Cyrillic: Цвјетко Поповић; 1896 – 9 June 1980) was a Bosnian Serb who was involved in the 1914 assassination of Archduke Franz Ferdinand of Austria.
Infanta Blanca of Spain
Infanta Blanca of Spain (7 September 1868 – 25 October 1949) was the eldest child of Carlos, Duke of Madrid, Carlist claimant to the throne of Spain and his wife Princess Margherita of Bourbon-Parma.
Blanca was a member of the House of Bourbon and - according to the Carlists - an Infanta of Spain by birth.
In 1889 she married Archduke Leopold Salvator of Austria.
The couple had ten children.
The family left Austria after the end of the Monarchy and finally settled in Barcelona.
When the male line of Blanca's family died out at the death of her uncle, Alfonso Carlos, Duke of San Jaime, some of the Carlists recognized her as the legitimate heiress to the Spanish throne.
Ferenc Ottinger
Baron Ferenc Ottinger (Sopron, 1792 – Vienna, 8 April 1869) was a Lieutenant General to
Franz Josef I of Austria, a Cavalry General and one of the leading generals in the Hungarian Revolution of 1848.
Veljko Čubrilović
Veljko Čubrilović
( Serbian Cyrillic: Вељко Чубриловић; 6 June 1886 – 3 February 1915) was a Bosnian Serb who was involved in the assassination of Archduke Franz Ferdinand of Austria.
Prince Franz-Josef of Bavaria
Prince Franz- Josef of Bavaria( born 21 September 1957) is a member of the Bavarian Royal House of Wittelsbach and a member of the Roman Catholic Order of Saint Benedict.
Archduke Karl Ludwig of Austria
Archduke Karl Ludwig Joseph Maria of Austria( 30 July
1833 – 19 May 1896) was the younger brother of Franz Joseph I of Austria( 1830 – 1916), the father of Archduke Franz Ferdinand of Austria( 1863 – 1914), whose assassination ignited World War I, and grandfather of the last emperor, Charles I.
Archduke Franz Karl of Austria
Archduke Franz Karl Joseph of Austria (17 December 1802 – 8 March 1878) was a member of the House of Habsburg-Lorraine.
He was the father of two emperors:
Franz Joseph I of Austria and Maximilian I of Mexico.
Through his third son Karl Ludwig, he was the grandfather of Archduke Franz Ferdinand of Austria – whose assassination sparked the hostilities that led to the outbreak of World War I – and the great-grandfather of the last Habsburg emperor Karl I.
Archduchess Elisabeth Franziska of Austria (1892–1930)
Archduchess Elisabeth Franziska Marie Karoline Ignatia Salvator (27 January 1892 – 29 January 1930) was the eldest daughter of Archduke Franz Salvator of Austria and Archduchess Marie Valerie of Austria.
Through her mother, she was a granddaughter of Emperor Franz Joseph I of Austria.

Question: Who is Archduke Franz Josef Of Austria, Prince Of Tuscany's maternal grandmother?
Answer: Princess Margherita of Bourbon-Parma