Question: Do director of film The Trygon Factor and director of film Riders of the Northland have the same nationality?

Riders of the Northland is a 1942 American Western film directed by William Berke and written by Paul Franklin. The film stars Charles Starrett, Russell Hayden, Shirley Patterson, Cliff Edwards, Bobby Larson and Lloyd Bridges. The film was released on June 18, 1942, by Columbia Pictures. <SEP> William A. Berke( October 3, 1903 – February 15, 1958) was an American film director, producer and screenwriter. He directed nearly 90 films between 1934 and 1958. He also produced nearly 80 films between 1933 and 1958. He was born in Milwaukee, Wisconsin and died in Los Angeles, California. Richard Fleischer later recalled Berke" was known as King of the B's. For years and years he had made nothing but pictures with ten or twelve day shooting schedules, minuscule budgets of about$ 100,000 and no stars. Without bothering with editing or any postproduction chores and with short shooting schedules, he was able to squeeze in eight or ten pictures a year. And he was going nuts". According to Fleischer, Berke eventually pestered RKO executives enough to be assigned an A picture with a long shooting schedule and stars and he still shot it in twelve days. <SEP> His career in television began in 1953 and he directed for over 30 TV programmes until 1990. He was born in Stoke Newington, London. Cyril S. Frankel( 28 December 1921 – 7 June 2017) was a British film and television director. He directed many episodes of popular British TV shows, such as" The Avengers", and the pilot episodes of the ITC Entertainment shows" Randall and Hopkirk( Deceased)" and" Department S" in 1969. In 1970, he directed" Timelash", an episode of" UFO", which he described as a very interesting script and one of his personal favourites. Frankel also directed many documentaries and feature films, including" Never Take Sweets from a Stranger"( 1960) and" School for Scoundrels"( 1960; taking over from Robert Hamer, who was credited as sole director). One of his films," Man of Africa"( 1953)- the first film to feature a cast made up of relatively unknown black actors- was not released and was lost for some time. A complete copy has since been discovered and has been screened at a number of international film festivals. In terms of documentaries, Frankel supervised some of the films that were broadcast for the BBC arts series" Monitor"( 1958 – 65), among which was the first ballet programme to be filmed and edited to the choreography. Prior to his retirement, he became the ceramics expert for Bonhams auction house. A book," Modern Pots: Hans Coper, Lucie Rie and their Contemporaries- The Lisa Sainsbury Collection", was co-authored by Frankel and published in 2000. His memoir," Eye to Eye", was published by Bank House Books in 2009. Frankel died on 7 June 2017 at the age of 95. <SEP> Ian Barry is an Australian director of film and TV. <SEP> It is one of the films based on works by Edgar Wallace of the 1960s and its German title is Das Geheimnis der weißen Nonne/" Mystery of the White Nun". The Trygon Factor is a 1966 British- West German crime film directed by Cyril Frankel and starring Stewart Granger, Susan Hampshire and Robert Morley. The film is based on the Edgar Wallace novel" Kate Plus Ten". <SEP> Peter Levin is an American director of film, television and theatre.