Proclamation of accession of George VI

On 12 December 1936, George VI was proclaimed king throughout the British Empire after the abdication of his brother Edward VIII following a constitutional crisis as result of the King's desire to marry twice-divorced American socialite Wallis Simpson. == Proclamation == At Fort Belvedere, on 10 December, Edward signed his written abdication notices, witnessed by his three younger brothers: Prince Albert, Duke of York (who succeeded Edward as King); Prince Henry, Duke of Gloucester; and Prince George, Duke of Kent.

Source: Wikipedia — Proclamation of accession of George VI (CC BY-SA 4.0)