Prince Friederich Wilhelm

of Hesse-Kassel

1883  -1916

Prince Maximilian 
of Hesse-Kassel 

1894 - 1914

Prince Philipp
of Hesse-Kassel 

(20 October 1894 – 13 October 1914), killed in action in World War I.

no issue.

(20 October 1894 – 13 October 1914), killed in action in World War I.

no issue

(6 November 1896 – 25 October 1980 Rome), married on 23 Sept 1925 to Princess Mafalda of Savoy (19 November 1902 Rome – 28 August 1944),

had issue.

Prince Wolfgang
of Hesse-Kassel 

1896 - 1989

Prince Richard
of Hesse-Kassel

1901 - 1969

Prince Christoph
of Hesse-Kassel 

1901 - 1943

Prince Wolfgang of Hesse-Kassel (or Hesse-Cassel) (Wolfgang Moritz; 6 November 1896 – 12 July 1989) was the designated Hereditary Prince of the monarchy of Finland  and as such, already called the Crown Prince of Finland officially until 14 December 1918

no issue

Prince Richard of Hesse-Kassel was the fifth child of the Landgrave and Landgravine of Hesse-Kassel. He died on February 11, 1969 at the sixty-seven.

His brother-in-law, Prince Philip of Greece and Denmark,

no issue

married Princess Sophie of Greece and Denmark (26 June 1914 Mon Repos, 

Corfu – 24 November 2001 Bavaria) on 13 December 1930 (civil)

had issue