Gustaf Archibald Siegwart Douglas 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.
- Occupation
- politician, businessperson, philatelist
- Citizenship
- Sweden
- Born
- March 3, 1938, 1938
- Died
- May 3, 2023
