About Prince Gustaf Adolf, Duke of Västerbotten
Prince Gustaf Adolf of Sweden, Duke of Västerbotten (Gustaf Adolf Oscar Fredrik Arthur Edmund; 22 April 1906 – 26 January 1947) was a Swedish prince who for most of his life was second in the line of succession to the Swedish throne with the title of Hereditary Prince. He was the eldest son of the future King Gustaf VI Adolf, who was crown prince for most of his son's life, and his first wife, Princess Margaret of Connaught. Hereditary Prince Gustaf Adolf thus had the prospect of succeeding his father as King of Sweden but never became king as he was killed on 26 January 1947 in an airplane crash at Kastrup Airport, Copenhagen, Denmark. He thus predeceased both his grandfather and his father who ascended the Swedish throne three years after his son's death. The current king, Carl XVI Gustaf, is Prince Gustaf Adolf's son. He was the eldest son of Gustaf VI Adolf, who was crown prince for most of his son's life and ascended the Swedish throne three years after his son's death. The prince was killed on 26 January 1947 in an airplane crash at Kastrup Airport, Copenhagen, Denmark.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.