Prince Adalbert was born on 14 July 1884 as the third son of the then Prince Wilhelm of Prussia and his first wife, Princess Augusta Victoria of Schleswig-Holstein. He was born in the Marmorpalais of Potsdam in the Province of Brandenburg , where his parents resided until his father acceded to the throne as Emperor Wilhelm II in 1888.
Issue. Frederick William II of Prussia (1744–1797) . married (1) Elisabeth Christine of Brunswick-Lüneburg.They had one child Princess Frederica Charlotte of Prussia (1767–1820), who married Prince Frederick, Duke of York and Albany, the second son of George III of the United Kingdom.
A portrait of Prince Henry of Prussia At the beginning of World War I , Prince Henry was named Commander-in-Chief of the Baltic Fleet. Although the means provided to him were far inferior to Russia 's Baltic Fleet , he succeeded, until the 1917 Revolution, in putting Russian naval forces far on the defensive and hindered them from making attacks on the German coast.
Prince Franz Friedrich Christian of Prussia (born 17 October 1944). After the divorce, Prince Karl married, morganatically, Luise Dora Hartmann (5 September 1909 – 23 April 1961) on 9 November 1946. The childless couple divorced in 1959. Prince Karl's last marriage was to Eva Maria Herrera y Valdeavellano (10 June 1922 – 6 March 1987) on 20 ...
Prince Frederick Charles Alexander of Prussia (German: Friedrich Karl Alexander; 29 June 1801 – 21 January 1883) was a younger son of Frederick William III of Prussia. He served as a Prussian general for much of his adult life and became the first Herrenmeister (Grand Master) of the Order of Saint John after its restoration as a chivalric order. 
Louis Ferdinand, Prince of Prussia (German: Louis Ferdinand Victor Eduard Adalbert Michael Hubertus Prinz von Preußen; 9 November 1907 – 26 September 1994) was a member of the princely House of Hohenzollern, which occupied the Prussian and German thrones, until the abolition of those monarchies in 1918.
Prince Alexander Ferdinand Albrecht Achilles Wilhelm Joseph Viktor Carl Feodor of Prussia (26 December 1912 – 12 June 1985), who married Armgard Weygand on 19 December 1938. They had one son, Prince Stephan Alexander Dieter Friedrich of Prussia (1939–1993); he had one daughter, Princess Stephanie Victoria-Louise of Prussia (born 1966).