Frederick IX

The Columbia Encyclopedia, 6th ed. | 2011 | 318 words | Copyright

Frederick IX 1899–1972, king of Denmark (1947–72), son and successor of Christian X . He married (1935) Princess Ingrid of Sweden. Because he did not have a son the constitution was amended in 1953 to allow for a female heir to the throne; Frederick was succeeded by his daughter, Queen Margaret II .

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