Prince Henry, Duke of Gloucester, 1936. The Duke of Gloucester (1900-1974) was the third son of King George V and Queen Mary. Illustration from George V and Edward VIII, A Royal Souvenir, by FGH Salusbury, a souvenir book published as Edward VIII was crowned following the death of his father, George V, (Daily Express Publication, London, 1936). (Photo by The Print Collector/Print Collector/Getty Images)

Prince Henry, Duke of Gloucester, 1936. The Duke of Gloucester (1900-1974) was the third son of King George V and Queen Mary. Illustration from George V and Edward VIII, A Royal Souvenir, by FGH Salusbury, a souvenir book published as Edward VIII was crowned following the death of his father, George V, (Daily Express Publication, London, 1936). (Photo by The Print Collector/Print Collector/Getty Images)