Prince Frederick of Prussia (1911–1966)

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Prince Frederick of Prussia
"Count von Lingen"
Kronprinzessin Cecilie mit Prinz Friedrich.jpg
The Crown Princess presents her fourth son Frederick, 1911
Born19 December 1911
Berlin, German Empire
Died20 April 1966(1966-04-20) (aged 54)
Rhine River, West Germany
Burial11 May 1966
Lady Brigid Guinness
(m. 1945; his death 1966)
IssuePrince Nicholas
Prince Andreas
Princess Victoria Marina, Mrs. Achache
Prince Rupert
Princess Antonia, Duchess of Wellington
Full name
German: Friedrich Georg Wilhelm Christoph
FatherWilhelm, German Crown Prince
MotherDuchess Cecilie of Mecklenburg-Schwerin
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 Frederick of Prussia (German: Prinz Friedrich Georg Wilhelm Christoph von Preußen; 19 December 1911 – 20 April 1966), also known as Mr. Friedrich von Preussen in the United Kingdom,[1] was the fourth son of Crown Prince Wilhelm of Germany and Duchess Cecilie of Mecklenburg-Schwerin.


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

  • Frederick Nicholas (born 3 May 1946) married to Hon. Victoria Lucinda Mancroft, four children;
  • Andreas (born 14 November 1947) married to Alexandra Blahova, two children;
  • Victoria Marina (born 22 February 1952) married to Philippe Alphonse Achache, issue;
  • Rupert (born 28 April 1955) married to Ziba Rastegar-Javaheri, two children;
  • Antonia (born 28 April 1955) married to Charles Wellesley, 9th Duke of Wellington, issue.

Studies in Britain, then internment[edit]

He was studying at Cambridge, living incognito as the Count von Lingen, when war broke out in September 1939. He was arrested and interned in May 1940. He was held in Britain 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]

He renounced his German citizenship in 1947.[2] He was naturalised as a British citizen in October 1947 under the name Friedrich von Preussen (having also been known during residence in the UK as "George Mansfield").[2] This naturalization was controversial, in part because being a descendant of Sophia of Hanover, and having rights under the Act of Settlement 1701, as amended by the Sophia Naturalisation Act 1705, he had a claim to British citizenship from birth. His status in context of his claim for compensation for property seized in Poland was debated in Parliament and the law courts until 1961.[1]


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



  1. ^ a b Commons Debate of 19 October 1961
  2. ^ a b c d 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