Princess Caroline-Mathilde of Denmark was the wife of which younger son of Christian X?
Princess Caroline-Mathilde of Denmark Princess Caroline-Mathilde of Denmark (Danish: "Caroline-Mathilde Louise Dagmar Christine Maud Augusta Ingeborg Thyra Adelheid" ; 27 April 1912 – 12 December 1995) was a daughter of Prince Harald of Denmark and granddaughter of King Frederick VIII of Denmark. As the wife of Knud, Hereditary Prince of Denmark, she became Hereditary Princess of Denmark by marriage.
Frederick V of Denmark Frederick V (Danish and Norwegian: "Frederik"; 31 March 172314 January 1766) was king of Denmark-Norway and Duke of Schleswig-Holstein from 1746 until his death. He was the son of Christian VI of Denmark and Sophia Magdalene of Brandenburg-Kulmbach.