Prince August Wilhelm of Prussia died on 1949-03-25.
Prince Friedrich Wilhelm of Prussia died on 1925-03-09.
The last heir to a royal throne to die in battle was Prince Wilhelm of Prussia. He was killed in the Battle of France on May 26, 1940.
Prince Hubertus of Prussia died in 1950.
King Friedrich Wilhelm I of Prussia died on May 31, 1740 at the age of 51.
Prince Oskar of Prussia died on 1958-01-27.
Prince Augustus of Prussia died on 1843-07-19.
Prince Joachim of Prussia died on 1920-07-18.
Prince Charles of Prussia died on 1883-01-21.
Prince George of Prussia died on 1902-05-02.
Prince Waldemar of Prussia died on March 27, 1879 at the age of 11.
Prince Augustus William of Prussia died on 1758-06-12.
Prince Joachim Albert of Prussia died on 1939-10-24.