Prince Frederick of Hesse-Kassel
Prince Frederick of Hesse- Kassel( 11 September 1747 – 20 May 1837) was a younger member of the dynasty that ruled the Landgraviate of Hesse- Kassel( or Hesse- Cassel) and a Danish general.
He was born as the youngest son of Hereditary Prince Frederick of Hesse- Kassel( the future Landgrave Frederick II) and Princess Mary of Great Britain.
He was the last surviving grandchild of George II of Great Britain, dying one month before Queen Victoria( granddaughter of his first cousin King George III) ascended to the throne.
Margravine Hedwig Sophie of Brandenburg
Hedwig Sophia of Brandenburg( 14 July 1623, Berlin- 26 June 1683, Schmalkalden) was Landgravine consort of Hesse- Kassel by marriage to William VI, Landgrave of Hesse- Kassel, and regent from 1663 until 1677 during the minority of her sons, William VII, Landgrave of Hesse- Kassel and Charles I, Landgrave of Hesse- Kassel.
Prince William of Hesse-Kassel
Prince William of Hesse- Kassel( 24 December 1787 – 5 September 1867), was the first son of Prince Frederick of Hesse- Kassel and Princess Caroline of Nassau- Usingen.
Charles I, Landgrave of Hesse-Kassel
Charles of Hesse- Kassel( 3 August 1654 – 23 March 1730), of the House of Hesse, was the Landgrave of Hesse- Kassel from 1670 to 1730.
William VII, Landgrave of Hesse-Kassel
William VII of Hesse- Kassel( 21 June 1651 – 21 November 1670) was Landgrave of Hesse- Kassel.
Elisabeth Henriette of Hesse-Kassel
Landgravine Elisabeth Henriëtte of Hesse- Kassel( 18 November 1661 – 7 July 1683) was the daughter of William VI, Landgrave of Hesse- Kassel and Hedwig Sophia of Brandenburg( 1623 – 1683) a sister of Elector Frederick William of Brandenburg.
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.
Alexander Frederick, Landgrave of Hesse
Alexander Frederick, Landgrave of Hesse( 25 January 1863, Copenhagen – 26 March 1945) was a Hessian Prince.
He was the son of Prince Frederick William of Hesse- Kassel and Princess Anna of Prussia.
From 1888–1925 he was Head of the House of Hesse, but abdicated his position to his brother Prince Frederick Charles of Hesse.
He was visually handicapped from birth, and this, in addition to his morganatic marriage, played a part in his decision to abdicate.
George Charles of Hesse-Kassel
George Charles of Hesse-Kassel (8 January 1691 – 5 March 1755) was a prince of Hesse-Kassel and a Prussian General.

Question: Who is Prince Frederick William Of Hesse-Kassel's father?