Infante Gabriel of Spain
Infante Gabriel of Spain( 12 May 1752 – 23 November 1788) was a son of King Charles III of Spain and his wife Maria Amalia of Saxony.
Prince Louis, Duke of Nemours
Prince Louis of Orleans, Duke of Nemours( Louis Charles Philippe Raphaël d' Orléans; 25 October 1814 – 26 June 1896) was the second son of King Louis- Philippe I of France, and his wife Maria Amalia of Naples and Sicily.
Princess Maria Amalia of Saxony
Maria Amalia of Saxony( 26 September 1757 – 20 April 1831) was a Duchess consort of Zweibrücken by her 1774 marriage to Charles II August, Duke of Zweibrücken.
Louis I of Etruria
Louis I( 5 July 1773 – 27 May 1803) was the first of the two kings of Etruria.
Louis was the son of Ferdinand, Duke of Parma, and Maria Amalia of Austria.
He was born in 1773, when his great- grandfather, King Louis XV of France, was still alive.
Maria Amalia of Naples and Sicily
Maria Amalia of Naples and Sicily (Maria Amalia Teresa; 26 April 1782 – 24 March 1866) was a French queen by marriage to Louis Philippe I, King of the French.
Maria Amalia, Holy Roman Empress
Maria Amalia of Austria (Maria Amalie Josefa Anna; 22 October 1701 – 11 December 1756) was Holy Roman Empress, Queen of the Germans, Queen of Bohemia, Electress and Duchess of Bavaria etc.
as the spouse of Emperor Charles VII.
By birth, she was an archduchess of Austria, the daughter of Emperor Joseph I and Wilhelmine Amalia of Brunswick-Lüneburg.
Maria Amalia had seven children, only four of whom lived through to adulthood, including Maximilian III, Elector of Bavaria.
Archduchess Maria Amalia of Austria (1780–1798)
Archduchess Maria Amalia of Austria ("Maria Amalia Josephe Johanna Katharina Theresia"; 15 October 1780 - 25 December 1798) was an Archduchess of Austria by birth.
Charles VII, Holy Roman Emperor
Charles VII (7 April 1697 – 20 January 1745) was the Prince-elector of Bavaria from 1726 and Holy Roman Emperor from 24 January 1742 until his death in 1745.
A member of the House of Wittelsbach, Charles was the first person not born of the House of Habsburg to become emperor in three centuries, though he was connected to that house both by blood and by marriage.
Maria Amalia of Saxony
Maria Amalia of Saxony
( Maria Amalia Christina Franziska Xaveria Flora Walburga; 24 November 1724 – 27 September 1760) was Queen consort of Naples and Sicily from 1738 till 1759 and then Queen consort of Spain from 1759 until her death in 1760, by marriage to Charles III of Spain.
A popular consort, she oversaw the construction of the Caserta Palace outside Naples as well as various other projects, and she is known for her influence upon the affairs of state.
Moving to Spain in 1759, she then set about the improvements to the Royal Palace of Madrid but died before its completion.
Maria Amalia was politically active and openly participated in state affairs in both Naples and Spain.
Zenobia Revertera
Zenobia Revertera, duchess di Castropignano( 19 October 1712- 31 January 1779) was an Italian noble and courtier.
She was an influential favorite of the queen of Naples, Maria Amalia of Saxony.

Question: When did Maria Amalia, Holy Roman Empress's husband die?
Answer: 20 January 1745