Frederick IX of Denmark
King of Denmark from 1947 to 1972
Frederick IX of Denmark (11 March 1899 - 14 January 1972) was King of Denmark from 20 April 1947 until his death on 14 January 1972. He was the son of King Christian X of Denmark and Queen Alexandrine, born Duchess of Mecklenburg. He was the fourth Danish monarch of the House of Glucksburg.