Gustaf Douglas

His patriline is Scottish, of the Swedish-German branch, descended via two obscure generations,[3] from the youngest son of James Douglas, 1st Lord Dalkeith, ancestor of the 15th century Earls of Morton.

His maternal great-grandfather was Philipp, Prince of Eulenburg (1847–1921), a friend of Wilhelm II, whose youngest child Viktoria Ada Astrid Agnes Gräfin zu Eulenburg (1886–1967) married in 1909 (divorced 1921) Professor Otto Ludwig Haas-Heye (1879–1959), and had issue, including two daughters.

After an MBA from Harvard Business School in 1964, he worked in Sweden and was CEO of the newspapers Dagens Nyheter and Expressen between 1973 and 1980.

He formed a partnership with fellow businessman Melker Schörling, who also controls a significant amount of Securitas shares and serves as the company's chairman.

He is the eleventh wealthiest person in Sweden, according to Forbes magazine, with an estimated net worth of around US$3.2 billion as of March 2013.

[4] Douglas a fellow of the Royal Philatelic Society London (FRPSL) and in 2018 was appointed to the Roll of Distinguished Philatelists.