Ernst Jacobson
Ernst Jacobson was a Swedish chess master.
He took 8th at Copenhagen 1916, took 2nd at Stockholm 1916, tied for 7-8th at Göteborg 1920, took 3rd and won ahead of Karl Berndtsson and Gustaf Nyholm at Jönköping 1921, and took 4th at Uppsala 1923.
He thrice represented Sweden in Chess Olympiads at London 1927, The Hague 1928, and Hamburg 1930, and played in friendly matches Germany vs. Sweden and Stockholm vs. Leningrad.