Prince Frederick of the Netherlands

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Prince Frederick
Photograph of Prince Frederick
Born	(1797-02-28)28 February 1797 Berlin
Died	8 September 1881(1881-09-08) (aged 84) Wassenaar
Spouse	Princess Louise of Prussia ​ ​ (m. 1825; died 1870)​
Issue	Louise, Queen of Sweden and Norway Prince Willem Prince Frederick Marie, Princess of Wied
House	Orange-Nassau
Father	William I of the Netherlands
Mother	Wilhelmine of Prussia

Prince Frederick of the Netherlands, Prince of Orange-Nassau (full names: Willem Frederik Karel; 28 February 1797, in Berlin – 8 September 1881, in Wassenaar), was the second son of William I of the Netherlands and his wife, Wilhelmine of Prussia.

Frederick was active in the military and political life of the Netherlands. He served as Commissary-general of the Department of War and as Chief Director of War and Navy, where he modernized the army according to the Prussian model. Frederick also led the Dutch troops during the Belgian Revolution in 1830. Additionally, he was a prominent Freemason and Grand Master of the Order of Freemasons. After his active career, he withdrew to his estate and played a mediating role within the royal family.