Gustaf Douglas

Gustaf Archibald Siegwart Douglas (3 March 1938 – 3 May 2023) was a Swedish aristocrat, billionaire businessman, and politician. In August 2022, his net worth was estimated at US$7.2 billion. In 2007 he became a member of the Royal Swedish Academy of Engineering Sciences. Biography Early life and background Gustaf Archibald Siegwart Douglas was the oldest son of Carl Ludvig Douglas (1908–1961), a Swedish nobleman and diplomat who was the Swedish Ambassador to Brazil, and his Prussian wife Ottora Maria Haas-Heye (1910–2001). He had two younger sisters. The older is Elisabeth Douglas (b. 1940), who married Prince Max, Duke in Bavaria (brother and heir to the Bavarian and Jacobite pretender Franz, Duke of Bavaria) and had five daughter including Sophie, Hereditary Princess of Liechtenstein. The younger sister is Rosita Douglas (b. 1943), who was the 11th Duke of Marlborough's third wife and mother his three youngest children, though the eldest died as an infant. His patriline is Scottish, of the Swedish-German branch, descended via two obscure generations, from the youngest son of James Douglas, 1st Lord Dalkeith, ancestor of the 15th century Earls of Morton. All these Douglases were of the Morton branch of the ancient Douglas family. The Douglas family was introduced in the 17th century at Riddarhuset under number 19 among families of comital status. Gustaf Douglas later served on the board of Riddarhuset.