Duchess Luise of Brunswick-Wolfenbüttel
Luise of Brunswick- Wolfenbüttel( Luise Amalie; 29 January 1722 – 13 January 1780) was daughter of Ferdinand Albert II, Duke of Brunswick- Wolfenbüttel and his wife Duchess Antoinette of Brunswick- Wolfenbüttel.
Frederick William II of Prussia
Frederick William II (25 September 1744 – 16 November 1797) was King of Prussia from 1786 until his death.
He was in personal union the Prince-elector of Brandenburg
and (via the Orange-Nassau inheritance of his grandfather) sovereign prince of the Canton of Neuchâtel.
Pleasure-loving and indolent, he is seen as the antithesis to his predecessor, Frederick II.
Under his reign, Prussia was weakened internally and externally, and he failed to deal adequately with the challenges to the existing order posed by the French Revolution.
His religious policies were directed against the Enlightenment and aimed at restoring a traditional Protestantism.
However, he was a patron of the arts and responsible for the construction of some notable buildings, among them the Brandenburg Gate in Berlin.
Dorothea Hedwig of Brunswick-Wolfenbüttel
Dorothea Hedwig of Brunswick- Wolfenbüttel( 3 February 1587, Wolfenbüttel – 16 October 1609, Zerbst) was a princess of Brunswick- Wolfenbüttel by birth and by marriage Princess of Anhalt- Zerbst.
Hedwig of Brunswick-Wolfenbüttel
Hedwig of Brunswick- Wolfenbüttel( 9 February 1595 in Wolfenbüttel – 26 June 1650 in Szczecinek), was a princess of Brunswick- Wolfenbüttel by birth and the Duchess of Pomerania by marriage.
Elisabeth Christine of Brunswick-Wolfenbüttel
Elisabeth Christine of Brunswick- Wolfenbüttel( 28 August 1691 – 21 December 1750) was Princess of Brunswick- Wolfenbüttel, Holy Roman Empress, German Queen, Queen of Bohemia and Hungary; and Archduchess of Austria by her marriage to Emperor Charles VI.
She was renowned for her delicate beauty and also for being the mother of Empress Maria Theresa.
She was the longest serving Holy Roman Empress.
Princess Antoinette of Brunswick-Wolfenbüttel
Antoinette of Brunswick-Wolfenbüttel (Antoinette Amalie; 14 April 1696 – 6 March 1762) was a Duchess of Brunswick-Wolfenbüttel by marriage to Ferdinand Albert II of Brunswick-Wolfenbüttel.
She was the mother of the Queen of Prussia, the Duchess of Saxe-Coburg-Saalfeld and the Queen of Denmark and Norway.
Eleonore von Schlieben
Countess Eleonore Louise Albertine von Schlieben-Sanditten (1720 - 15 February 1755) was a German noblewoman and a lady in waiting to Elisabeth Christine of Brunswick-Wolfenbüttel-Bevern, the wife of Frederick the Great.
Elisabeth Christine of Brunswick-Wolfenbüttel-Bevern
Elisabeth Christine of Brunswick-Wolfenbüttel-Bevern (8 November 1715 – 13 January 1797) was Queen of Prussia from 1740 to 1786 as the spouse of Frederick the Great.
By birth, she was a Duchess of Brunswick-Wolfenbüttel.
She was also the longest-serving queen of Prussia.
Elisabeth of Brunswick-Wolfenbüttel, Duchess of Saxe-Altenburg
Elisabeth of Brunswick- Wolfenbüttel( 23 June 1593 – 25 March 1650) was a princess of Brunswick- Wolfenbüttel and by marriage Duchess of Saxe- Altenburg.
Elisabeth Christine of Brunswick-Wolfenbüttel, Crown Princess of Prussia
Elisabeth Christine Ulrike of Brunswick-Wolfenbüttel (Elisabeth Christine Ulrike; 8 November 1746 – 18 February 1840), was a Crown Princess of Prussia as the first wife of Crown Prince Frederick William, her cousin and the future king Frederick William II of Prussia.
She was the seventh child and third daughter of Charles I, Duke of Brunswick-Lüneburg and Princess Philippine Charlotte of Prussia, the sister of Frederick the Great.
She held the rank of Duchess in Brunswick with the style and title "Her Serene Highness" Princess Elisabeth Christine.

Question: What is the date of death of Elisabeth Christine Of Brunswick-Wolfenbüttel, Crown Princess Of Prussia's husband?
Answer: 16 November 1797