[2] He was a member of the jury at the 15th Venice International Film Festival in 1954.
[3] Idestam-Almquist, who was the son of a Riksvensk father and a Swedish-speaking Finn mother, was born in Turku, Finland, and grew up in Saint Petersburg, Russian Empire.
He later fled to Sweden with his family during the February Revolution and studied art history in Uppsala.
His fascination with film came after watching a silent film with a benshi while serving the Red Cross in Asia.
This biographical article related to film in Sweden is a stub.