Prince Friedrich Karl Nikolaus of Prussia (20 March 1828 – 15 June 1885) was the son of Prince Charles of Prussia (1801–1883) and his wife, Princess Marie of Saxe-Weimar-Eisenach (1808–1877). Prince Friedrich Karl was a grandson of King Frederick William III of Prussia and a nephew of Frederick William IV and William I .
Prince Joachim Viktor Wilhelm Leopold Friedrich Sigismund: 17 December 1891: 6 July 1927: married HSH Princess Marie Luise Dagmar Bathildis Charlotte of Schaumburg-Lippe (10 February 1897-1 October 1938) Tassilo Wilhelm Humbert Leopold Friedrich Karl: 6 April 1893: 6 April 1917: known as Prince Friedrich Karl of Prussia, fell in World War I.
Prince Wilhelm Eitel Friedrich Christian Karl of Prussia (7 July 1883 – 8 December 1942) was the second son of Emperor Wilhelm II of Germany by his first wife, Princess Augusta Viktoria of Schleswig-Holstein-Sonderburg-Augustenburg.
Prince Karl Anton of Hohenzollern-Sigmaringen (German: Karl Anton Joachim Zephyrinus Friedrich Meinrad Fürst von Hohenzollern-Sigmaringen) (7 September 1811 – 2 June 1885) was the final Prince of Hohenzollern-Sigmaringen before the territory was annexed by Prussia in 1849 and Prime Minister of Prussia from 1858 to 1862, which made him the only Hohenzollern Prince to hold that post.
Frederick Charles Louis Constantine, Prince and Landgrave of Hesse (German: Friedrich Karl Ludwig Konstantin Prinz und Landgraf von Hessen-Kassel; Finnish: Fredrik Kaarle; 1 May 1868 – 28 May 1940), was the brother-in-law of the German Emperor Wilhelm II. He was elected King of Finland on 9 October 1918, but renounced the throne on 14 ...
Prince Joachim Friedrich Ernst Waldemar of Prussia (10 February 1868 – 27 March 1879) was the sixth child and youngest son of German Crown Prince Friedrich (later Emperor Friedrich III), and Victoria, Princess Royal, the eldest daughter of the British Queen Victoria
Georg Friedrich is the only son of Prince Louis Ferdinand of Prussia (1944–1977) and Countess Donata of Castell-Rüdenhausen (1950–2015).    Born into a mediatised princely family, his mother later became Duchess Donata of Oldenburg when she married secondly Duke Friedrich August of Oldenburg , who had previously been married to her sister-in-law Princess Marie Cécile of Prussia.