Tjadden Hällström was born on November 7, 1923 in Norrköping, Östergötlands län, Sweden as Lars Hällström. He was an actor and writer, known for Täcknamn Coq Rouge (1989), 47:an Löken blåser på! (1972) and Åsa-Nisse och den stora kalabaliken (1968). He was married to Gunnel Hällström.