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Yesterday, August 3, was the anniversary of the birthday of King Friedrich-Wilhelm III of Prussia (1770 – 1840) and King Haakon VII of Norway (1873 – 1957). I noticed that the two looked similar and sure enough King Friedrich-Wilhelm III of Prussia is the great-great grandfather of King Haakon VII of Norway. I do find it fascinating how genes are passed throughout the Royal Houses of Europe.

Friedrich-Wilhelm III of Prussia

King Haakon VII of Norway

Here is how King Haakon VII of Norway descends from King Friedrich-Wilhelm III of Prussia.

Friedrich-Wilhelm III was King of Prussia from 1797 to 1840. Friedrich-Wilhelm was born in Potsdam in 1770 as the son of Friedrich-Wilhelm II of Prussia and Frederica-Louisa of Hesse-Darmstadt. On December 24, 1793, Friedrich-Wilhelm married Luise of Mecklenburg-Strelitz, the fourth daughter and sixth child of Duke Charles of Mecklenburg-Strelitz and his wife Princess Friederike of Hesse-Darmstadt. (the two Frederika’s of Hesse-Darmstadt mentioned here were first cousins).

Friedrich-Wilhelm III and Luise of Mecklenburg-Strelitz had 10 children and the the third surviving daughter and ninth child was Princess Louise of Prussia (February 1, 1808 – December 6, 1870).

Louise of Prussia

Frederick of the Netherlands

Louise was born in Königsberg or Berlin. She and Prince Frederick of the Netherlands knew each other from childhood because of Frederick’s frequent visits in Berlin. They became engaged in 1823, and married on May 21, 1825 in Berlin.

Louise of Prussia and Prince Frederick of the Netherlands, Prince of Orange-Nassau were also first cousins with him being the son of the second son of Willem I of the Netherlands and his wife, Wilhelmine of Prussia. His mother, Princess Wilhelmine, was born in Potsdam. She was the fourth child of eight born to King Friedrich-Wilhelm II of Prussia and Frederica-Louisa of Hesse-Darmstadt and was the sister to Friedrich-Wilhelm III.

They had four children, and the eldest was Louise of the Netherlands (August 5, 1828 – March 30, 1871). In 1849, Louise was selected as a suitable spouse for Crown Prince Carl, the son of King Oscar I of Sweden and Norway and Josephine of Leuchtenberg. The marriage was arranged after the negotiations to arrange a marriage between Carl and his cousin Princess Louise of Prussia had failed.

Louise of the Netherlands

King Carl XV-IV of Sweden-Norway

Her husband, Carl XV (May 3, 1826 – September 18, 1872) was King of Sweden (Carl XV) and Norway, there often referred to accurately as Carl IV, from 1859 until his death.

Louisa and Carl XV had two children together. The eldest Louise of Sweden (October 31, 1851 – March 20, 1926), was Queen of Denmark as the spouse of King Frederik VIII, the eldest son and child of Prince Christian of Schleswig-Holstein-Sonderburg-Glücksburg (future King Christian IX of Denmark) and Princess Louise of Hesse-Cassel-Rumpenheim.

future Frederik VIII of Denmark and Louise of Sweden. (Parents)

She was the mother of both King Christian X of Denmark and King Haakon VII of Norway.

Haakon VII (born Prince Carl of Denmark; August 3, 1872 – September 21, 1957) was the King of Norway from his election in 1905 until his death in 1957.