Oskar is the second son of Wilhelm-Karl Prince of Prussia and of his wife Armgard von Veltheim. He is a great-grandson of Wilhelm II, the last German Emperor and King of Prussia.
In 1992 Oskar married Auguste Zimmermann von Siefart (born 1962). They have three children:
Oskar Julius Alvo Carlos (born 1993); he married in April 2024 Johanna Freiin von Jenisch
Wilhelmine Auguste Donata Maria Armgard (born 1995)
Albert Burchard Carl Marcus Nikolaus (born 1998)
In 1995 Oskar was awarded a Ph.D. in history by the Free University of Berlin for his dissertation about the relationship between the Emperor Wilhelm II and the United States. He has since made a career as a media manager: he has been managing director of the German branch of Discovery Channel, founder of KiKa, new media manager of Hubert Burda Media Group and radio manager of Holtzbrinck Publishing Group.[1]
In 2017 Oskar was named Patron of the Altmark Festival, a music festival in Saxony-Anhalt.[2]
Order of Saint John (Bailiwick of Brandenburg)[edit]
Oskar has been active in promoting the numerous charitable and volunteer organisations belonging to the Order.[4] In 2013 Oskar represented the Bailiwick at an ecumenical celebration in Berlin to observe the 900th anniversary of the Knights Hospitaller.[5] On June 25, 2021, he welcomed the President of Germany, Frank-Walter Steinmeier, to the Johanniter Hospital in Treuenbrietzen.[6]
Wilhelm II. und die Vereinigten Staaten von Amerika: zur Geschichte seiner ambivalenten Beziehung. Dissertation. Freie Universität Berlin 1995. Ars Una, Neuried 1997, ISBN3-89391-058-1.
Heinrich Freiherr von Massenbach: Die Hohenzollern einst und jetzt. 17. Auflage. Bonn 2004.
Wolfgang Stribrny: Der Johanniter-Orden und das Haus Hohenzollern. Niederweisel 2004 (= Schriftenreihe des Hess. Genossenschaft des Johanniterordens, Heft 24).
