Prince Axel of Denmark, RE, SKmd (Danish: Prins Axel Christian Georg til Danmark; 12 August 1888 – 14 July 1964) was a member of the Danish royal family. He was the second son of Prince Valdemar of Denmark and Princess Marie of Orléans , and a grandson of King Christian IX of Denmark .
Prince Valdemar of Denmark (27 October 1858 – 14 January 1939) was a member of the Danish royal family. He was the third son and youngest child of Christian IX of Denmark and Louise of Hesse-Kassel. He had a lifelong naval career. He was paternal uncle of Prince Andrew of Greece and Denmark, father of Prince Philip, Duke of Edinburgh