realm predecessor successor succession religion moretext image_size title image article_title name reign
denmark hans hedtoft christian x margrethe ii king of denmark lutheranism -lrb- more ... -rrb- 223px '' denmark '' frederick ix of denmark.jpg frederick ix of denmark
 frederik ix 20 april 1947 -- 14 january 1972
frederick ix of denmark

frederik ix -lrb- christian frederik franz michael carl valdemar georg -rrb- -lrb- 11 march 1899 -- 14 january 1972 -rrb- was king of denmark from 1947 to 1972 .
he was the son of king christian x of denmark and queen alexandrine , born duchess of mecklenburg , and the fourth danish monarch of the house of glücksburg .
