Question: Are both Jean Dréville and Margarethe von Trotta film directors ?

Context articles: Marianne and Juliane
Barbara Sukowa
New German Cinema
The Promise (1995 film)
Rosa Luxemburg (film)
The Lost Honour of Katharina Blum (film)
Jean Dréville
The Long Silence
Margarethe von Trotta
Vision (film)

Marianne and Juliane (German: Die bleierne Zeit ; lit.
 "The Leaden Time" or "Leaden Times"), also called The German Sisters in the United Kingdom, is a 1981 West German film directed by Margarethe von Trotta.
 The screenplay is a fictionalized account of the true lives of Christiane and Gudrun Ensslin.
 Gudrun, a member of The Red Army Faction, was found dead in her prison cell in Stammheim in 1977.
 In the film, Von Trotta depicts the two sisters Juliane (Christine) and Marianne (Gudrun) through their friendship and journey to understanding each other.
 "Marianne and Juliane" was von Trotta's third film and solidified her position as a director of the New German Cinema.
Barbara Sukowa (born 2 February 1950) is a German theatre and film actress.
 She is known for her work with directors Rainer Werner Fassbinder and Margarethe von Trotta.
 She won the Cannes Film Festival Award for Best Actress for the 1986 film "Rosa Luxemburg".
 Her other film appearances include "Lola" (1981), "Europa" (1990), "M. Butterfly" (1993), and "Hannah Arendt" (2012).
New German Cinema (German: "Neuer Deutscher Film" ) is a period in German cinema which lasted from the late 1960s into the 1980s.
 It saw the emergence of a new generation of directors.
 Working with low budgets, and influenced by the French New Wave, such directors as Rainer Werner Fassbinder, Werner Herzog, Alexander Kluge, Harun Farocki, Volker Schlöndorff, Helma Sanders-Brahms, Hans-Jürgen Syberberg, Margarethe von Trotta and Wim Wenders made names for themselves and produced a number of 'small' motion pictures that caught the attention of art house audiences, and enabled these directors (particularly Wenders and Schlöndorff) to create better-financed productions which were backed by the big US studios.
 However, most of the films were commercial failures and, by 1977, 80% of a budget for a typical German film was ensured by a subsidy.
The Promise (German: Das Versprechen ) is a 1995 German-language film directed by Margarethe von Trotta.
 It was an international co-production between Germany, France and Switzerland.
 Two young lovers in Berlin are separated when the Berlin wall goes up, and their stories intertwine during the three decades to German reunification.
 This film was chosen as Germany's official submission to the 67th Academy Awards for Best Foreign Language Film, but did not receive a nomination.
Rosa Luxemburg (German: Die Geduld der Rosa Luxemburg ) is a 1986 West German drama film directed by Margarethe von Trotta.
 The film received the 1986 German Film Award for Best Feature Film ("Bester Spielfilm"), and Barbara Sukowa won the Cannes Film Festival's Best Actress Award and the German Film Award for Best Actress for her performance as Rosa Luxemburg.
The Lost Honour of Katharina Blum, or: How violence develops and where it can lead (German original title: "Die verlorene Ehre der Katharina Blum oder: Wie Gewalt entstehen und wohin sie führen kann") is a 1975 film adaptation of the novel of the same name by Heinrich Böll, written for the screen by Volker Schlöndorff and Margarethe von Trotta.
 Schlöndorff and von Trotta wrote the script with an emphasis on the vindictive and harsh treatment of an innocent woman by the public, the police and the media.
Jean Dréville (20 September 1906 – 5 March 1997) was a French film director.
 He directed 45 films between 1928 and 1969.
The Long Silence (Italian: "Il lungo silenzio" , German: "Zeit des Zorns" , French: "Le long silence" ) is a 1993 Italian-German-French political thriller-drama film directed by Margarethe von Trotta.
 For her performance in this film Carla Gravina was awarded Best Actress at the 1993 Montreal World Film Festival and won the Italian Golden Globe for Best Actress.
 The film also won the Italian Golden Globes for Best Original Score and for Best Screenplay.
Margarethe von Trotta (born 21 February 1942) is a German film director who has been referred to as a "leading force" of the New German Cinema movement.
 Von Trotta boasts an impressive body of work that has won her awards all over the world in the last forty years.
 She was married to and collaborated with director Volker Schlöndorff.
 Although they made a successful team, von Trotta felt she was seen as secondary to Schlöndorff.
 Subsequently, she established a solo career for herself and became "Germany’s foremost female film director, who has offered the most sustained and successful female variant of "Autorenkino" in postwar German film history."
 Certain aspects of von Trotta’s work have been compared to Ingmar Bergman’s features from the 1960s and 1970s.
 She says that it was thanks to Bergman's films that she "‘fell in love’ with the medium and its possibilities for representing inner psychic worlds."
Vision (German: Vision - Aus dem Leben der Hildegard von Bingen ; English: Vision – From the Life of Hildegard von Bingen) is a 2009 German film directed by Margarethe von Trotta.