Genealogy of the Royal Family of Prussia¹

HRH Prince Oskar and his descendants

HRH Oskar Karl Gustav Adolf Prince of Prussia
* Marmor Palais, Potsdam, July 27th, 1888
† Munich, January 27th, 1958

Married:

(morganatic) (civil and religious) Schloß Bellevue near Berlin, July 31st, 1914:
Ina-Marie Helene Adele Elise Countess von Bassewitz-Levetzow
* Bristow, January 27th, 1888
† Munich, September 17th, 1973
Created Countess von Ruppin, July 27th, 1914
(The marriage was acknowledged as dynastic, November 3rd, 1919)

Children from this marriage:

1. Oskar Wilhelm Karl Hans Kuno Count von Ruppin
   (Since November 3rd, 1919:) HRH Oskar Wilhelm Karl Hans Kuno Prince of Prussia
   * Potsdam, July 12th, 1915
   † (killed in battle) in Poland, September 5th, 1939
2. Burchard Friedrich Max Werner Georg Count von Ruppin
   (Since November 3rd, 1919:) HRH Burchard Friedrich Max Werner Georg Prince of Prussia
   * Potsdam, January 8th, 1917
   † Hof near Salzburg, August 12th, 1988

   Married:

   (civil) Munich, January 30th and (religious) Munich, January 31st, 1961:
   H Ill H Eleonore Vera Alexia Anna Maria Countess Fugger von Babenhausen
   * Babenhausen, January 31st, 1925
   † Munich, December 19th, 1992

3. Herzeleide-Ina-Marie Sophie Charlotte Else Countess von Ruppin
4. HRH Wilhelm-Karl Adalbert Erich Detloff Prince of Prussia

Herzeleide-Ina-Marie Sophie Charlotte Else Countess von Ruppin
(Since November 3rd, 1919:) HRH Herzeleide-Ina-Marie Sophie Charlotte Else Princess of Prussia
* Bristow, December 25th, 1918
† Munich, March 22nd, 1989

Married:

(civil) Potsdam, August 15th and (religious) Potsdam, August 16th, 1938:
HSH Karl Peter Franz Andreas Alexander Prince Biron von Curland
* Schloß Wartenberg, Großwartenberg, June 15th, 1907
† Munich, February 28th, 1982

Children from this marriage:

1. HSH Viktoria-Benigna Ina-Maria Cecilie Friederike Luise Helene Princess Biron von Curland
   * Schloß Wartenberg, Großwartenberg, July 2nd, 1939

   Married:

   (civil) Munich, May 3rd and (religious) Munich, May 6th, 1968:
   Johann Christoph Robert Baron von Twickel ("John")
   * Berlin, July 25th, 1940
   (Divorced: 1993)

   Children from this marriage:

   1. Nikolaus Maximilian Ludwig Karl Ernst-Johann Maria Baron von Twickel
      * Munich, April 1st, 1969
   2. Tassilo Heinrich Alexander Baron von Twickel
      * Munich, December 8th, 1976
2. HSH Ernst-Johann Karl Oskar Franz Eitel-Friedrich Peter Burchard Prince Biron von Curland
   * Berlin, August 6th, 1940

   Married:

   (civil) Munich, August 14th and (religious) Dreieinigheitskirche, Munich-Bogenhausen, August 15th, 1967:
   Elisabeth Victoria Raimonda Countess von Ysenburg-Philippseich
   * Rome, December 9th, 1941

   Adopted children:

   1. Anja Prinzessin Biron von Curland
      * Munich, January 5th, 1975
   2. Christiana Prinzessin Biron von Curland
      * Munich, May 28th, 1977
3. HSH Michael Karl August-Wilhelm Prince Biron von Curland
   * Großwartenberg, January 20th, 1944

   Married:

   (civil) Munich, July 1st and (religious) Dreieinigheitskirche, Munich-Bogenhausen, July 2nd, 1969:
   Kirstin von Oertzen
   * Liessow near Schwerin, November 4th, 1944

   Children from this marriage:

   1. HSH Veronika Princess Biron von Curland
      * Munich, January 23rd, 1970
   2. HSH Alexander Prince Biron von Curland
      * Munich, September 18th, 1972
   3. HSH Stephanie Princess Biron von Curland
      * Munich, September 24th, 1975

HRH Wilhelm-Karl Adalbert Erich Detloff Prince of Prussia
* Potsdam, January 30th, 1922

Married:

(civil) Destedt near Brunswick and (religious) Dorfkirche, Destedt near Brunswick, March 1st, 1952:
Armgard Else Helene von Veltheim
* Destedt near Brunswick, February 17th, 1926

Children from this marriage:

1. HRH Donata-Viktoria Ina-Marie Ottonie Princess of Prussia
   * Bonn, December 24th, 1952
2. HRH Wilhelm-Karl Oskar Friedrich Prince of Prussia
   * Bonn, August 26th, 1955
3. HRH Oskar Michael Hans Karl Prince of Prussia
   * Bonn, May 6th, 1959

   Married:

   (civil) Berlin, July 17th and (religious) St. Johannes Church, Ahlden, October 3rd, 1992:
   Auguste Therese Alexandra Hendrikje Zimmermann von Siefart
   * Amsterdam, May 16th, 1962

   Children from this marriage:

   1. HRH Oskar Julius Alvo Carlos Prince of Prussia
      * Hanover, November 29th, 1993
   2. HRH Wilhelmine Auguste Donata Maria Armgard Princess of Prussia
      * Munich, July 7th, 1995
   3. HRH Albert Burchard Carl Marcus Nicolaus Prince of Prussia
      * Munich, July 13th, 1998

Footnotes:

1. Source: Queen Victoria's Descendants by Marlene A. Eilers. With special thanks to Hein Bruins, Brigitte Gastel Lloyd and Netty Leistra.

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• Genealogies of Royal Families.
• Royal Families in Europe.
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Last updated: December 3rd, 2001.