Question: Did both Roger Christian and Joe D'Amato make films?

Context articles: Black Angel (1980 film)
Underworld (1996 film)
René Clair
Gisele Marvin
Stranded (2013 film)
Giubbe rosse
The Final Cut (1995 film)
Roger Christian (filmmaker)
Starship (film)
Joe D'Amato

Black Angel is a 1980 British short film that was shown before the theatrical release of "The Empire Strikes Back" in certain locales.
 It was the directorial debut of "Star Wars" art director Roger Christian.
 The film negative was thought to be lost until it was rediscovered in December 2011.
 In June 2015, it was announced that Christian was working on a feature film adaptation of "Black Angel", which would be in part funded on crowd-funding site, Indiegogo.
Underworld is a 1997 comedy thriller film that was directed by Roger Christian and stars Denis Leary, Joe Mantegna and Annabella Sciorra.
René Clair (11 November 1898 – 15 March 1981) born René-Lucien Chomette, was a French filmmaker and writer.
 He first established his reputation in the 1920s as a director of silent films in which comedy was often mingled with fantasy.
 He went on to make some of the most innovative early sound films in France, before going abroad to work in the UK and USA for more than a decade.
 Returning to France after World War II, he continued to make films that were characterised by their elegance and wit, often presenting a nostalgic view of French life in earlier years.
 He was elected to the Académie française in 1960.
 Clair's best known films include "The Italian Straw Hat" (1928), "Under the Roofs of Paris" (1930), "Le Million" (1931), "À nous la liberté" (1931), "I Married a Witch" (1942), and "And Then There Were None" (1945).
Gisele Marie "Gigi" Marvin (born March 7, 1987) is an American ice hockey player for the Boston Pride of the National Women's Hockey League.
 As a member of the United States national women's ice hockey team, Marvin won a silver medal at the 2010 Olympic Winter Games and the 2014 Winter Olympics.
 Her grandfather is Cal Marvin, the coach of the 1958 United States Men's National Ice Hockey Team and the manager of the 1965 United States Men's National Ice Hockey Team, is a member of the United States Hockey Hall of Fame.
 She hails from Warroad, Minnesota, in Roseau County, the same small town as 1960 gold medalists Bill and Roger Christian and 1980 gold medalist Dave Christian.
Stranded is a 2013 science fiction-horror film directed and co-written by Roger Christian starring Christian Slater, Brendan Fehr, Amy Matysio, and Michael Therriault.
 Astronauts stranded on a lunar mining base attempt to survive an attack by a shapeshifting alien life form.
 Filming was at the Canada Saskatchewan Production Studios by Regina, Saskatchewan based Minds Eye Entertainment.
 The film was one of the last financed by the province's cancelled film employment tax credit and was produced entirely in Saskatchewan.
Giubbe rosse / Red Coats (internationally released as Cormack of the Mounties, "Killers of the Savage North", "Red Coat" and "Royal Mounted Police") is a 1975 Italian adventure film co-written and directed by Joe D'Amato.
 It is part of a brief series of films that tried to market the commercial success of Lucio Fulci's "White Fang" presenting very similar plots and settings.
 D'Amato co-wrote the film with writer/actor Luigi Montefiori (a.k.a. George Eastman), who went on to star in a dozen or more D'Amato films.
The Final Cut is a 1995 American action/drama/thriller feature film directed by Roger Christian for Cine Cut Films with a screenplay by Raul Englis based on a story by Crash Leyland.
Roger Christian (born 25 February 1944) is an English set decorator, production designer and feature film director.
 He won an Academy Award for his work on the original "Star Wars" and was Oscar-nominated for his work on "Alien".
 Christian directed the second unit on both "Return of the Jedi" and "" as well as feature films including "The Sender" and "Nostradamus".
 He also directed the 2000 film "Battlefield Earth" which is regarded as one of the worst films ever made.
Starship, also known as Lorca and the Outlaws, and 2084 is a 1984 science fiction film directed by Roger Christian from a screenplay by Christian and Matthew Jacobs.
 The music for the film, which stars John Tarrant, Deep Roy, Donogh Rees and Cassandra Webb, was written by Tony Banks of Genesis.
Joe D'Amato (birth name: Aristide Massaccesi; 15 December 1936 in Rome – 23 January 1999 in Rome) was an Italian filmmaker who is most well known for his horror and adult films.