Question: Oddone of Savoy's mother was the Queen of what nation?

Context paragraphs:
Amadeus VIII, Duke of Savoy: Amadeus VIII (4 September 1383 – 7 January 1451) was an Savoyard nobleman, the son of Amadeus VII, Count of Savoy and Bonne of Berry.  He was surnamed the Peaceful.  After the death of his father in 1391, his mother acted as a regent, because of his youth.  Born at Chambéry, he was the Count of Savoy from 1391 to 1416 and was elevated by Emperor Sigismund to Duke of Savoy in 1416.

Beatrice of Savoy, Dame of Faucigny: Beatrice of Savoy (c.1237-21 April 1310) was "suo jure" Dame of Faucigny through the inheritance from her mother Agnes of Faucigny.  Her father was Peter II, Count of Savoy, she was his only legitimate child, but due to Salic law that existed in Savoy, she was excluded from the succession upon his death in 1268.  In addition to being "Dame", Beatrice held the titles of "Dauphine of Viennois" and "Viscountess of Béarn" by her two marriages.

Adelaide of Austria: Adelaide of Austria (Adelheid Franziska Marie Rainera Elisabeth Clotilde; 3 June 1822 – 20 January 1855) was the Queen of Sardinia by marriage to Victor Emmanuel II of Sardinia, future King of Italy, from 1849 until 1855 when she died as a result of childbirth.  She was the mother of Umberto I of Italy.

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".

Marie Jeanne Baptiste of Savoy-Nemours: Marie Jeanne of Savoy (Marie Jeanne Baptiste; 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.

Joel Savoy: Joel Savoy (born in Eunice, Louisiana, USA) is a Cajun musician and music producer from Southwest Louisiana.  His father Marc Savoy, famous accordion builder and musician, and his mother, Ann Savoy, author and music producer, are well known ambassadors and supporters of preserving the Cajun culture.

Otto I, Count of Savoy: Otto (French: "Odon, Oddon, Othon)" ; Italian: "Oddone" ; c. 1023 – c. 1057 /1060) was count of Savoy from around 1051 until his death.  Through marriage to Adelaide, the heiress of Ulric Manfred II, he also administered the march of Susa from around 1046 until his death.

Blanche of Burgundy, Countess of Savoy: Bianca of Burgundy (1288 – July 1348), was a Countess consort of Savoy, daughter of Robert II, Duke of Burgundy, and Agnes of France.  She married in 1307 Edward, Count of Savoy.  She was mother of Joan of Savoy.

Wilson Savoy: Wilson Allen Savoy (born February 1, 1982 in Eunice, Louisiana) is a Grammy winning Cajun accordion player and singer in the band the Pine Leaf Boys and The Band Courtbouillon, as well as a local filmmaker in Lafayette, LA.  His father Marc Savoy, famous accordion builder and musician, and his mother, Ann Savoy, author and music producer, are well known ambassadors and supporters of preserving the Cajun culture.

Philip, Duke of Nemours: Philip of Savoy, Duke of Nemours (149025 November 1533) was a French nobleman.  He was a son of Philip II, Duke of Savoy, and his second wife Claudine de Brosse.  He was a half-brother of Louise of Savoy, the mother of Francis I of France.  He was the founder of the Nemours branch of the house of Savoy which eventually settled in France.

Supporting paragraphs: Prince Oddone, Duke of Montferrat Adelaide of Austria
Answer: Sardinia