Prince Christoph of Hesse was a nephew of Kaiser Wilhelm II. He was an SS-Oberführer in the Allgemeine SS and an officer in the Luftwaffe Reserve, killed on active duty in a plane crash during World War II. His brother-in-law, Prince Philip of Greece and Denmark, fought on the British side and married the future Queen Elizabeth II after the war.

Prince Philip, Duke of Edinburgh, was the husband of Queen Elizabeth II. As such, he was the consort of the British monarch from his wife's accession on 6 February 1952 until his death in 2021, making him the longest-serving royal consort in history.