Amadeo I of Spain
Amadeo I (Italian: Amedeo, sometimes anglicized as Amadeus; 30 May 184518 January 1890) was an Italian prince who reigned as King of Spain from 1870 to 1873.
The only King of Spain from the House of Savoy, he was the second son of King Vittorio Emanuele II of Italy and was known for most of his life as the Duke of Aosta, but was appointed King of Spain briefly, from 1870 to 1873.
He was elected by the Cortes as Spain's monarch in 1870, following the deposition of Isabella II, and was sworn in the following year.
Amadeo's reign was fraught with growing republicanism, Carlist rebellions in the north, and the Cuban independence movement.
He abdicated and returned to Italy in 1873, and the First Spanish Republic was declared as a result.
Granted the hereditary title of Duke of Aosta in the year of his birth, he founded the Aosta branch of Italy's royal House of Savoy, which is junior in agnatic descent to the branch descended from King Umberto I that reigned in Italy until 1900, but senior to the branch of the Dukes of Genoa.
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.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
Prince Luigi Amedeo, Duke of the Abruzzi
Prince Luigi Amedeo, Duke of the Abruzzi( 29 January
1873 – 18 March 1933) was an Italian mountaineer and explorer, briefly Infante of Spain as son of Amadeo I of Spain, member of the royal House of Savoy and cousin of the Italian King Victor Emmanuel III.
He is known for his Arctic explorations and for his mountaineering expeditions, particularly to Mount Saint Elias( Alaska – Yukon) and K2( Pakistan – China).
He also served as an Italian admiral during World War I.
Victor Emmanuel II of Italy
Victor Emmanuel II (full name: "Vittorio Emanuele Maria Alberto Eugenio Ferdinando Tommaso di Savoia"; 14 March 1820 – 9 January 1878) was King of Sardinia from 1849 until 17 March 1861, when he assumed the title of King of Italy and became the first king of a united Italy since the 6th century, a title he held until his death in 1878.
Borrowing from the old Latin title "Pater Patriae" of the Roman emperors, the Italians gave him the epithet of "Father of the Fatherland" .
Born in Turin as the eldest son of Charles Albert, Prince of Carignano, and Maria Theresa of Austria, he fought in the First Italian War of Independence (1848-49) before being made King of Piedmont-Sardinia following his father's abdication.
He appointed Camillo Benso, Count of Cavour, as his Prime Minister, and he consolidated his position by suppressing the republican left.
In 1855, he sent an expeditionary corps to side with French and British forces during the Crimean War; the deployment of Italian troops to the Crimea, and the gallantry shown by them in the Battle of the Chernaya (16 August 1855) and in the siege of Sevastopol led the Kingdom of Sardinia to be among the participants at the peace conference at the end of the war, where it could address the issue of the Italian unification to other European powers.
This allowed Victor Emmanuel to ally himself with Napoleon III, Emperor of France.
France had supported Sardinia in the Second Italian War of Independence, resulting in liberating Lombardy from Austrian rule.
Victor Emmanuel supported the Expedition of the Thousand (1860–1861) led by Giuseppe Garibaldi, which resulted in the rapid fall of the Kingdom of the Two Sicilies in southern Italy.
However, Victor Emmanuel halted Garibaldi when he appeared ready to attack Rome, still under the Papal States, as it was under French protection.
In 1860, Tuscany, Modena, Parma and Romagna decided to side with Sardinia-Piedmont, and Victor Emmanuel then marched victoriously in the Marche and Umbria after the victorious battle of Castelfidardo over the Papal forces.
He subsequently met Garibaldi at Teano, receiving from him the control of southern Italy and becoming the first King of Italy on 17 March 1861.
In 1866, the Third Italian War of Independence allowed Italy to annex Veneto.
In 1870, Victor Emmanuel also took advantage of the Prussian victory over France in the Franco-Prussian War to taking over the Papal States after the French withdrew.
He entered Rome on 20 September 1870 and set up the new capital there on 2 July 1871.
He died in Rome in 1878, and was buried in the Pantheon.
The Italian national Victor Emmanuel II monument in Rome, containing the Altare della Patria, was built in his honor.
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.
Diana Guardato
Diana Guardato was a member of the aristocratic Patrician Guardato family, and had three children with King Ferdinand I: Diana Guardato is the 16th- Great Grandmother of His Royal Highness Albert II of Belgium, 15th- Great Grandmother of His Majesty Juan Carlos
I of Spain, 17th- Great Grandmother of Philippe of Belgium, 14th- Great Grandmother of His Majesty Manuel II of Portugal, 16th- Great Grandmother of Grand Duke Henri, as well as many others.
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.
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.
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.

Question: Who is Amadeo I Of Spain's paternal grandmother?
Answer: Maria Theresa of Austria