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).
Prince Henry, Duke of Gloucester, KG, KT, KP, GCB, GCMG, GCVO, GCStJ, PC, ADC (Henry William Frederick Albert; 31 March 1900 – 10 June 1974) was the third son and fourth child of King George V and Queen Mary. He served as Governor-General of Australia from 1945 to 1947, the only member of the British royal family to hold the post.
Frederick III of Brandenburg, since 1701 also Frederick I of Prussia, was born in Königsberg in 1657. Already in the last years of the reign of his father, the friendly relations with France established after Saint Germain (1679) had cooled, not least because of the Huguenot question .