Jaakko Jahnukainen was born on March 15, 1925 in Helsinki, Finland. He was a writer and actor, known for Tähtisumua (1961), Tanssivat kaksoset (1967) and Lasse Mårtenson - laulaja (1967). He was previously married to Rauni Lemmikki Tikkanen. He died on October 8, 1980 in Helsinki, Finland.