Tom of Finland was the artistic pseudonym of Touko Laaksonen. He was and remains to this day one of the most internationally renowned Finnish artists. Mr Laaksonen is the subject of the 2017 biopic Tom of Finland, directed by the Finnish director Dome Karukoski.
I interviewed Karukoski for Monocle 24’s Cinema Show.
The story can be found here: http://monocle.com/radio/shows/the-cinema-show/72/