Frederick IX (Christian Frederik Franz Michael Carl Valdemar Georg) (11 March 1899 – 14 January 1972) was King of Denmark from 20 April 1947 until his death. He was the son of King Christian X of Denmark and Queen Alexandrine, born Duchess of Mecklenburg. Frederick was educated at the Danish Naval Academy (breaking Danish royal tradition by choosing a naval instead of an army career) and the University of Copenhagen. Before he became king, he had acquired the rank of Rear Admiral and he had had several senior commands on active service. In addition, with his great love of music the King was an able piano player and conductor. Frederick's reign saw great change. During these years, Danish society shook off the restrictions of an agricultural society and developed a welfare state. And, as a consequence of the booming economy of the 1960s, women entered the labour market. In other words, Denmark became a modern country, which meant altogether new demands on the monarchy and its ability to adjust. In 1922 Frederick was engaged to Princess Olga of Greece, his cousin and daughter of Prince Nicholas of Greece, however they never married. He married Princess Ingrid of Sweden (1910-2000, daughter of Crown Prince Gustav Adolf, later King Gustav VI Adolf of Sweden) on 24 May 1935. They were related in several ways. In descent from Oscar I of Sweden, they were third cousins. In descent from Paul I of Russia, Frederick was a fourth cousin of Ingrid's mother. Of this marriage three daughters were born:
- Princess Margrethe (born 1940), later Queen Margrethe II of Denmark. Married French Count Henri de Laborde de Monpezat, who was created Prince Henrik of Denmark, in 1967.
- Princess Benedikte (born 1944). Married Prince Richard of Sayn-Wittgenstein-Berleburg in 1968.
- Princess Anne-Marie (born 1946). Married King Constantine II of the Hellenes in 1964.
When he had no sons, it was expected that his younger brother Knud would inherit the throne, in accordance with Denmark's succession law (Royal Ordinance of 1853). However, in 1953, an Act of Succession was passed, changing the method of succession to cognatic primogeniture, meaning that his eldest daughter, Margrethe, could succeed if he had no sons. The King never did have any sons, so Princess Margrethe did succeed, as Queen Margrethe II. Shortly after the King had delivered his New Year's Address to the Nation at the 1971/72 turn of the year, he fell ill. On his passing in 1972, King Frederick IX was buried outside Roskilde Cathedral near Copenhagen. The previous rulers had been interred in the cathedral, but it was the King's wish to be buried outside the cathedral instead.
Ancestors
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16. Friedrich Wilhelm, Duke of Schleswig-Holstein-Sonderburg-Glücksburg | |||||||||||||||
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8. Christian IX of Denmark |
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17. Louise Caroline of Hesse-Kassel | |||||||||||||||
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4. Frederick VIII of Denmark |
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18. Prince William of Hesse | |||||||||||||||
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9. Louise of Hesse-Kassel |
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19. Princess Louise Charlotte of Denmark | |||||||||||||||
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2. Christian X of Denmark |
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20. Oscar I of Sweden | |||||||||||||||
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10. Charles XV of Sweden |
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21. Josephine of Leuchtenberg | |||||||||||||||
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5. Lovisa of Sweden |
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22. Prince Frederik of the Netherlands | |||||||||||||||
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11. Louise of the Netherlands |
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23. Princess Luise of Prussia | |||||||||||||||
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1. Frederick IX of Denmark |
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24. Paul Friedrich, Grand Duke of Mecklenburg-Schwerin | |||||||||||||||
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12. Friedrich Franz II, Grand Duke of Mecklenburg-Schwerin |
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25. Princess Alexandrine of Prussia | |||||||||||||||
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6. Friedrich Franz III, Grand Duke of Mecklenburg-Schwerin |
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26. Heinrich LXIII, Prince of Reuss zu Schleiz-Köstritz | |||||||||||||||
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13. Princess Auguste of Reuss |
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27. Eleonore zu Stolberg-Wernigerode | |||||||||||||||
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3. Alexandrine of Mecklenburg-Schwerin |
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28. Nicholas I of Russia | |||||||||||||||
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14. Grand Duke Michael Nicolaievich of Russia |
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29. Charlotte of Prussia | |||||||||||||||
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7. Grand Duchess Anastasia Mikhailovna of Russia |
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30. Leopold, Grand Duke of Baden | |||||||||||||||
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15. Cecilie Auguste, Princess and Margravine of Baden |
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31. Sophie of Sweden | |||||||||||||||
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Frederick IX
Cadet branch of the House of Oldenburg
Born: March 11 1899 Died: January 14 1972 |
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| Regnal titles | ||
|---|---|---|
| Preceded by Christian X |
King of Denmark 1947–1972 |
Succeeded by Margrethe II |
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|---|---|
| Early Danish monarchs | (Harthacnut) · Gorm the Old · Harald Bluetooth · Sweyn Forkbeard†* · Harald II · Canute the Great†* · Harthacanute* · Magnus the Good† · Sweyn II · Harald III · Canute the Saint · Olaf I · Eric Evergood · Niels · Eric the Memorable · Eric Lamb · Sweyn Grathe & Canute V & Valdemar the Great · Canute VI · Valdemar the Victorious · Eric Plough-tax · Abel · Christopher I · Eric Klipping · Eric Menved · Christopher II · Valdemar III · Christopher II · Valdemar Atterdag · Olaf II† · Margaret I†‡ |
| House of Palatinate-Neumarkt | Eric of Pomerania†‡ · Christopher of Bavaria†‡ |
| House of Oldenburg | Christian I†‡ · Hans†‡ · Christian II†‡ · Frederick I† · Christian III† · Frederick II† · Christian IV† · Frederick III† · Christian V† · Frederick IV† · Christian VI† · Frederick V† · Christian VII† · Frederick VI† · Christian VIII† · Frederick VII |
| House of Schleswig- Holstein-Sonderburg- Glücksburg |
Christian IX · Frederick VIII · Christian X§ · Frederick IX · Margrethe II |
| † also Monarch of Norway · ‡ also Monarch of Sweden · * also Monarch of England · § also Monarch of Iceland | |


