What son of Queen Mary died on the August 1942 Dunbeath Air Crash?
August 1942 Dunbeath Air Crash:  The crash killed 14 of 15 passengers and crew, including HRH Prince George, Duke of Kent who was on duty as an Air Commodore in the Royal Air Force on a mission to Reykjavik; a loss keenly felt by the British Prime Minister. Prince George, Duke of Kent: Prince George, Duke of Kent, {'1': ", '2': ", '3': ", '4': "} (George Edward Alexander Edmund; 20 December 1902 – 25 August 1942) was the fourth son of George V of the United Kingdom and Queen Mary.
Prince George, Duke of Kent