Beatrice of Portugal, Duchess of Savoy
Infanta Beatrice of Portugal (31 December 1504 – 8 January 1538) was Duchess of Savoy by marriage to Charles III, Duke of Savoy.
She was the Sovereign Countess of Asti from 1531 to 1538.
Yolande Louise of Savoy
Yolande Louise of Savoy( 1487–1499), was a Duchess Consort of Savoy; married to Philibert II, Duke of Savoy.
Maria of Portugal, Duchess of Viseu
Maria of Portugal, Duchess of Viseu (18 June 1521 – 10 October 1577 in Lisbon) was an Infanta of Portugal, the only daughter of King Manuel I of Portugal and Eleanor of Austria.
A noted patron of the arts, Maria's personal wealth rivaled that of the king, her brother (John III of Portugal), making her the richest woman in Portugal and one of the richest in Europe.
Elvira de Mendoza
Elvira de Mendoza( d. 1523), was a Spanish and Portuguese court official.
She was the daughter of the nobleman Juan Furtado de Mendoza, chief forester of Ferdinand and Isabella, and married Martin de Alarcon, captain of the guard to the king and queen of Castile.
As a widow, she accompanied Maria of Aragon, Queen of Portugal on her marriage to the king of Portugal in 1500 as her lady- in- waiting.
She became a trusted favorite and confidante of the queen and awarded a pension of 200.000" reis" in 1508.
After the queen's death, she was appointed" aia"( nurse) to the princesses, Isabella of Portugal and Beatrice of Portugal, Duchess of Savoy.
Upon the arrival of the new queen, Eleanor of Austria, she was appointed her lady- in- waiting, and became her trusted companion.
She had an influential position at court, and had her son Joao de Alarcao appointed royal grand master of the hunt in 1521.
She accompanied the widowed Eleonor back to Castile in 1523, and died shortly after.
Maria Beatrice of Savoy
Maria Beatrice of Savoy (Maria Beatrice Vittoria Giuseppina; 6 December 1792 – 15 September 1840) was a Princess of Savoy and Duchess of Modena by marriage.
Beatrice of Savoy
Beatrice of Savoy( c. 1198 – c. 1267) was the daughter of Thomas I of Savoy and Margaret of Geneva.
She was Countess consort of Provence by her marriage to Ramon Berenguer IV, Count of Provence.
Beatrice of Viennois
Beatrice of Vienne( 1160 –1230) was a Countess of Savoy by marriage to Humbert III, Count of Savoy.
Princess Catherine Beatrice of Savoy
Catherine Beatrice of Savoy( 6 November 1636, Turin, Piedmont – 27 August 1637) was a Princess of Savoy by birth.
She was the youngest daughter born to Victor Amadeus I, Duke of Savoy, and his French consort, Princess Christine Marie of France.
Charles Amadeus, Duke of Nemours
Charles Amadeus of Savoy, Duke of Nemours( 12 April 162430 July 1652) was a French military leader and magnate.
He was the father of the penultimate Duchess of Savoy and of a Queen of Portugal.
Charles III, Duke of Savoy
Charles III of Savoy (10 October 1486 – 17 August 1553), often called Charles the Good, was Duke of Savoy from 1504 to 1553, although most of his lands were ruled by the French between 1536 and his death.

Question: What is the date of death of Beatrice Of Portugal, Duchess Of Savoy's husband?
Answer: 17 August 1553