Prince Oddone, Duke of Montferrat
Oddone of Savoy( Oddone Eugenio Maria; 11 July
1846 – 22 January 1866) was an Italian humanist and philanthropist.
He was the fourth child and third eldest son of King Victor Emmanuel II of Italy and his wife Adelaide of Austria.
He was a" Prince of Savoy".
Princess Luisa Cristina of Savoy
Princess Luisa Cristina of Savoy (27 July 1629 – 12 May 1692) was a Princess of Savoy by birth and the eldest daughter of Victor Amadeus I, Duke of Savoy.
She married her uncle Prince Maurice of Savoy but had no children.
She was the owner of the future "Villa della Regina".
She was a first cousin of Louis XIV of France and Charles II of England.
Yolande Louise of Savoy
Yolande Louise of Savoy( 1487–1499), was a Duchess Consort of Savoy; married to Philibert II, Duke of Savoy.
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.
Prince Vittorio Emanuele, Count of Turin
Prince Vittorio Emanuele of Savoy- Aosta, Infante of Spain, Count of Turin( 24 November 1870 – 10 October 1946) was a grandchild of King Victor Emmanuel II and a member of the House of Savoy.
He was a cousin of Victor Emmanuel III.
Marie Jeanne Baptiste of Savoy-Nemours
Marie Jeanne Baptiste of Savoy- Nemours( 11 April 1644 – 15 March 1724) was born a Princess of Savoy and became the Duchess of Savoy by marriage.
First married by proxy to Charles of Lorraine in 1662, Lorraine soon refused to recognise the union and it was annulled.
She married Charles Emmanuel II, Duke of Savoy in 1665 who was her kinsman.
The mother of the future Victor Amadeus II of Sardinia who saw the elevation of the House of Savoy to kings, she styled herself as Madama Reale or Madame Royale.
She acted as Regent of Savoy from 1675 in the name of her son Victor Amadeus II, who was her husband's successor.
Her regency officially ended in 1680, but she maintained power until her son banished her from further influence in the state in 1684.
She left a considerable architectural legacy in Turin, and was responsible for the remodelling of the Palazzo Madama, which was her private residence.
At the time of her death she was the mother of the King of Sardinia as well as great grandmother of two other kings, Louis I of Spain and Louis XV of France.
Maria Theresa of Austria (1801–1855)
Maria Theresa of Austria (21 March 1801 – 12 January 1855) was born an Archduchess of Austria and Princess of Tuscany.
She was a daughter of Ferdinand III, Grand Duke of Tuscany, and Luisa of Naples and Sicily.
She was named after her great-great-grandmother Empress Maria Theresa.
In 1817, she married Charles Albert of Sardinia and subsequently became the Queen of Sardinia upon her husband's accession to the throne in 1831.
Princess Maria Francesca of Savoy
Princess Francesca of Savoy (Maria Francesca Anna Romana; 26 December 1914 – 7 December 2001) was the youngest daughter of Victor Emmanuel III of Italy and Elena of Montenegro.
She was a sister of Umberto II of Italy and of Queen Giovanna of Bulgaria.
Princess Yolanda of Savoy
Princess Yolanda of Savoy (1 June 1901 – 16 October 1986) was the eldest daughter of King Victor Emmanuel III of Italy.
Maria Vittoria of Savoy
Maria Vittoria of Savoy( Maria Vittoria Francesca; 9 February 1690 – 8 July 1766) was a legitimated daughter of Victor Amadeus II of Sardinia, first king of the House of Savoy.
Married to the head of a cadet branch of the House of Savoy, she is an ancestor of the kings of Sardinia and of the Savoy kings of Italy.

Question: Who is Victor Emmanuel Ii Of Italy's maternal grandfather?
Answer: Ferdinand III