Prince Sigismund of Prussia
Member of the House of Hohenzollern
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Prince William Victor Charles Augustus Henry Sigismund of Prussia, was the second son of Prince Henry of Prussia and Princess Irene of Hesse and by Rhine. He was the nephew of Kaiser Wilhelm II and Tsarina Alexandra of Russia. Wikipedia
Born: November 27, 1896, Kiel, Germany
Died: November 14, 1978 (age 81 years), Puntarenas, Costa Rica
Children: Alfred van Pruisen, Princess Barbara of Prussia, and Prince Alfred of Prussia
Siblings: Prince Waldemar of Prussia and Prince Henry of Prussia
Spouse: Princess Charlotte of Saxe-Altenburg (m. 1919–1978)