A couple of years ago I was contacted by the group putting this documentary together. they wanted to use photos from the Eurohistory Collection, but wanted me to donate the use...it was a non-starter as we could not agree on a solution to the quandary at hand.
From Wikipedia, where I contribute a lot...
Charles Edward, Duke of Saxe-Coburg and Gotha (Leopold Charles Edward George Albert; German: Carl Eduard Georg Albert Luitpold; 19 July 1884 – 6 March 1954) was the fourth and last reigning Duke of Saxe-Coburg and Gotha, two duchies in Germany (from 30 July 1900 to 14 November 1918), and the head of the House of Saxe-Coburg and Gotha from 1900 until his death in 1954. A male-line grandson of Queen Victoria and Prince Albert of Saxe-Coburg and Gotha, he was also a Prince of the United Kingdom and held the British title of Duke of Albany.
The Duke was a controversial figure in the United Kingdom due to his status as Sovereign Duke of Saxe-Coburg and Gotha, part of the German Empire, during World War I. He was deprived of his British peerages, his title of Prince and Royal Highness and his British honours in 1919. In 1918, he was forced to abdicate his ducal throne. He also later joined the German Nazi Party, and served in a number of positions in Germany in the 1930s and 1940s, including as President of the German Red Cross.
He is the maternal grandfather of King Carl XVI Gustaf of Sweden. He was also the younger brother of HRH Princess Alice, Countess of Athlone.