Prince Frederick of Prussia (1911–1966)

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Prince Frederick
Kronprinzessin Cecilie mit Prinz Friedrich.jpg
The Crown princess presents her fourth son Frederick, 1911
Spouse Lady Brigid Guinness
Issue Prince Frederick
Prince William
Princess Victoria Marina, Mrs. Achache
Prince Rupert
Princess Antonia, Duchess of Wellington
Full name
German: Friedrich Georg Wilhelm Christoph
House House of Hohenzollern
Father Crown Prince Wilhelm of Germany
Mother Duchess Cecilie of Mecklenburg-Schwerin
Born 19 December 1911
Died 20 April 1966(1966-04-20) (aged 54)
Rhine River
Prussian Royalty
House of Hohenzollern
Wappen Deutsches Reich - Reichsadler 1889.svg
Wilhelm II
   Prince Wilhelm
   Prince Louis Ferdinand
   Prince Hubertus
   Prince Frederick
   Prince Alexander Ferdinand
   Princess Alexandrine
   Prince Oskar
   Princess Victoria Marina
   Prince Karl Franz
   Prince Burchard
   Princess Cecilie
   Princess Victoria Marina
   Herzeleide, Princess of Courland
   Prince Wilhem Victor
   Prince Wilhelm-Karl

Prince Friedrich of Prussia (German: Friedrich Georg Wilhelm Christoph; 19 December 1911 – 20 April 1966), also known as "Mr. Friedrich von Preussen" in England,[1] was the son of Crown Prince Wilhelm of Germany and Duchess Cecilie of Mecklenburg-Schwerin.


On 30 July 1945, he married Lady Brigid Katherine Rachel Guinness, daughter of Rupert Guinness, 2nd Earl of Iveagh, at Little Hadham, Hertfordshire. They had five children:[2]

  • Prince Frederick Nicholas (German: Friedrich Nikolaus, born 3 May 1946), married the Hon. Victoria Lucinda Mancroft (born March 7, 1952, daughter of Stormont Mancroft, 2nd Baron Mancroft) on 27 February 1980 in London, and had issue:
    • Beatrice Victoria von Preußen (born 10 February 1981)
    • Florence Jessica von Preußen (born 28 July 1983)
    • Augusta Lily von Preußen (born 15 December 1986)
    • Frederick Nicholas Stormont von Preußen (born 11 June 1990)
  • Prince William Andrew (German: Wilhelm Andreas, born 14 November 1947), married Alexandra Blahová (born on December 28, 1947) on 2 January 1979, daughter of František Blaho and wife Vlasta Dokupilová, formerly married on 17 December 1972 to Tom Aisbett, and had issue:
    • Tatiana Brigid Honor von Preußen (born 16 October 1980)
    • Frederick Alexander Henry von Preußen (born 15 November 1984)
  • Princess Victoria Marina Cecilie (German: Viktoria Marina Cecilie, born 22 February 1952), married Philippe Alphonse Achache (born 25 March 1945), son of Jean Achache and wife Jacqueline Andrieu, on 3 May 1976 in Albury, Hertfordshire, England, and had issue:
    • George Jean Achache (born 8 Jun 1980)
    • Francis Maximilian Frederick Achache (born 30 Apr 1982)
  • Prince Rupert Alexander Frederick (German: Rupprecht Alexander Friedrich, born 28 April 1955), married Ziba Rastegar-Javaheri (born 12 December 1954) on 5 January 1982 in London, England, daughter of Morteza Rastegar-Javaheri and wife Rabeéh Baghaii-Kermani, and had issue:
    • Brigid Elizabeth Soraya von Preußen (born 24 Dec 1983) in London, England
    • Astrid Katherine Rabeéh von Preußen (born 16 Apr 1985) in London, England
  • Princess Antonia Elizabeth Brigid Louise (German: Antonia Elisabeth Birgitta Luise, born 28 April 1955), married Arthur Charles Valerian Wellesley, 9th Duke of Wellington and had issue.

Studies in England, Internment[edit]

Friedrich was studying at Cambridge, living incognito under the name of Count von Lingen, when war broke out in September, 1939. He was arrested and interned in May, 1940. He was held in England for several months, then sent to internment camps near Quebec City and, soon afterwards, Farnham, Quebec. In both camps, he was elected camp leader by fellow inmates.[3]

British naturalisation in 1947[edit]

Being a descendant of Sophia of Hanover, and having rights under the Act of Settlement 1701, as amended by the Sophia Naturalisation Act 1705, Prince Frederick was naturalised as a British citizen in October 1947 under the name Mr. Friedrich Von Preussen (having also been known during residence in the UK as "George Mansfield".[2] This naturalisation was controversial to some, and his status and a subsequent claim for compensation was debated in parliament and the law courts until 1961.[1] In the period 1917-32 it was settled that a person who had a foreign title would normally undertake to relinquish it before he/she could receive a certificate of British naturalization, and no exception was made in the case of Mr. Friedrich von Preussen,[4]

Prince Friedrich was owner of Schloss Reinhartshausen at Erbach, Rheingau. While staying there in 1966, he went missing and was found two weeks later, having drowned in the Rhine in 1966, whether suicidally or accidentally could not be determined.[2]



  1. ^ a b Commons Debate of 19 October 1961
  2. ^ a b c Eilers, Marlene. Queen Victoria's Descendants. Rosvall Royal Books, Falkoping, Sweden, 1997. pp.17-18, 124-125, 172. ISBN 91-630-5964-9
  3. ^ Grandson of Kaiser Was Held in Canada. Toronto Star, June 1, 1945, p. 28
  4. ^ Home Office Notes, Dec 1924