Prince Gustaf Adolf, Duke of Västerbotten (died 1947)

Prince Gustaf Adolf, Duke of Västerbotten was a Swedish prince who for most of his life was second in the line of succession to the Swedish throne. 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 current king, Carl XVI Gustaf, is Prince Gustaf Adolf's son. The prince was killed on 26 January 1947 in an airplane crash at Kastrup Airport, Copenhagen, Denmark.