König was married to Ilka Schellenberg. Their son is the New York City-based art gallerist Leo Koenig. He was later married to the actress EddaKöchl-König [de]
Spanish-Italian-West German-British co-production Dark Spring Ingemo Engström [de] EddaKöchl [de] Drama Deadlock Roland Klick Mario Adorf, Anthony Dawson, Marquard