Frederik IX was King of Denmark from 1947 to 1972.
Four generations — four kings: King Christian IX, Crown Prince Frederik (VIII), Prince Christian (X) and Prince Frederik (IX) in 1903
Crown Prince Frederik, c. 1914
The newly engaged Princess Ingrid of Sweden and Crown Prince Frederik of Denmark, 1935
King Frederik IX and Queen Ingrid, c. 1950s
Ingrid of Sweden was Queen of Denmark from 20 April 1947 to 14 January 1972 as the wife of King Frederik IX.
Frederik IX
…became crown prince when his father succeeded as king in 1912. As a young man, he was educated at the Royal Danish Naval Academy. In 1935, he married Princess Ingrid of Sweden. They had three daughters: Margrethe, Benedikte and Anne-Marie. During Nazi Germany's occupation of Denmark, Frederik acted as regent from 1942 until…
Princess Ingrid (far right) with her father, mother and three brothers in 1912.
The newly married royal couple at their arrival in Copenhagen in 1935
Crown Prince Frederik and Crown Princess Ingrid on 9 May 1945, leaving Christiansborg Palace in Copenhagen after the first opening of Parliament following the end of Nazi Germany's occupation of Denmark.