Prince Frederick William of Hesse-Kassel
Frederick William George Adolphus, Landgrave of Hesse( 25 November 1820 – 14 October 1884) was the only son of Wilhelm I, Landgrave of Hesse- Kassel- Rumpenheim and Princess Louise Charlotte of Denmark.
Princess Charlotte of Denmark
Princess Louise Charlotte of Denmark( 30 October 1789 – 28 March 1864) was a Danish princess, and a princess of Hesse- Kassel by marriage to Prince William of Hesse- Kassel.
She played an important role in the succession crisis in Denmark in the first half of the 19th century.
Margravine Louise Charlotte of Brandenburg
Louise Charlotte of Brandenburg (13 September 1617 – 28 August 1676), was a Duchess consort of Courland by marriage to Duke Jacob Kettler of Courland.
She was the de facto ruler of Courland during the reign of her spouse.
She was born to George William, Elector of Brandenburg and Elizabeth Charlotte of the Palatinate (1597–1660).
Conrad, Margrave of Brandenburg-Stendal
Margrave Conrad I of Brandenburg (– 1304) was a member of the House of Ascania and a co-ruler of Brandenburg.
Duchess Louise Charlotte of Mecklenburg-Schwerin
Duchess Louise Charlotte of Mecklenburg- Schwerin( 19 November 1779 – 4 January 1801) was the maternal grandmother of Prince Albert, husband of Queen Victoria of the United Kingdom.
Louise Charlotte was born Duchess of Mecklenburg- Schwerin, her father being Friedrich Franz I, Grand Duke of Mecklenburg- Schwerin.
Her mother was Princess Louise of Saxe- Gotha- Altenburg; her sister Charlotte of Mecklenburg- Schwerin( 1784–1840) married King Christian VIII of Denmark.
Maria Amalia of Courland
Maria Anna Amalia of Courland( 12 June 1653 – 16 June 1711) was a Landgravine of Hesse- Kassel through her marriage on 21 May 1673 to her first cousin Charles I, Landgrave of Hesse- Kassel.
She was the child of Jacob Kettler and Margravine Louise Charlotte of Brandenburg, eldest daughter of George William, Elector of Brandenburg.
Frederick William, Margrave of Brandenburg-Schwedt
Frederick William of Brandenburg- Schwedt( 17 November 1700 – 4 March 1771) was a German nobleman.
In his lifetime, from 1711 to 1771, he held the titles Prince in Prussia and Margrave of Brandenburg, with the style Royal Highness.
He was made a knight of the Order of the Black Eagle.
In the 19th century he was retrospectively known by the title Margrave of Brandenburg- Schwedt, in order to differentiate his branch of the Hohenzollern dynasty.
He was the second owner of the Prussian secundogeniture of Brandenburg- Schwedt.
His parents were Philip William, Margrave of Brandenburg- Schwedt, and Princess Johanna Charlotte of Anhalt- Dessau.
He was the nephew of King Frederick I of Prussia.
Sabina of Brandenburg-Ansbach
Sabina of Brandenburg-Ansbach (12 May 1529 – 2 November 1575) was a princess of Brandenburg-Ansbach and Electress of Brandenburg by marriage.
Princess Louise Charlotte of Saxe-Altenburg
Princess Louise Charlotte of Saxe-Altenburg (Marie Agnes Louise Charlotte; 11 August 1873 – 14 April 1953) was a German noblewoman.
She was a princess of Saxe-Altenburg by birth and a princess of Anhalt by marriage.
Elizabeth Charlotte of the Palatinate, Electress of Brandenburg
Elisabeth Charlotte of the Palatinate (19 November 1597 – 26 April 1660) was an Electress consort of Brandenburg as the wife of George William, Elector of Brandenburg and Duke of Prussia, and the mother of Frederick William of Brandenburg, the "Great Elector".

Question: When did Margravine Louise Charlotte Of Brandenburg's mother die?
Answer: 26 April 1660