Question: Are Alan James and Arthur Ripley both Americans?

Context paragraphs:
Voice in the Wind: Voice in the Wind is a 1944 American film noir directed by Arthur Ripley and written by Friedrich Torberg, based on a story written by Arthur Ripley.  The drama features Francis Lederer, Sigrid Gurie and J. Edward Bromberg.

The Barber Shop: The Barber Shop (1933) is a short American Pre-Code comedy film starring W.C. Fields, directed by Arthur Ripley, and produced by Mack Sennett.

Alan Murdoch-Cozens: Alan James Murdoch-Cozens (formerly Alan James Murdoch; 17 September 1893 – 23 July 1970) was an English cricketer active from 1911 to 1919 who played for Sussex.  He was born in Wallingford, Oxfordshire and died in Malvern, Worcestershire.  He appeared in four first-class matches as a righthanded batsman who scored 124 runs with a highest score of 56.

Alias Jimmy Valentine (1920 film): Alias Jimmy Valentine is a 1920 American silent film crime drama starring Bert Lytell, directed by Edmund Mortimer and Arthur Ripley, and released through Metro Pictures.

I Met My Love Again: I Met My Love Again (1938) is an American romantic drama film distributed by United Artists, directed by Joshua Logan, Arthur Ripley and George Cukor.  The screenplay was written by David Hertz, based on the novel "Summer Lightning" by Allene Corliss.  The film stars Joan Bennett and Henry Fonda.

The Chase (1946 film): The Chase is a 1946 American film noir directed by Arthur Ripley.  The screenplay written by Philip Yordan is based on the Cornell Woolrich novel "The Black Path of Fear".

Thunder Road (film): Thunder Road is a black and white 1958 drama–crime film about running moonshine in the mountains of Kentucky and Tennessee in the late 1950s.  It was directed by Arthur Ripley and starred Robert Mitchum, who also produced the film, co-wrote the screenplay, and is rumored to have directed much of the film himself.  He also co-wrote (with Don Raye) the theme song, "The Ballad of Thunder Road".

Alan James: Alan James (23 March 1890 – 30 December 1952) was an American film director and screenwriter.  He directed 79 films between 1916 and 1943.  He also wrote for 62 films between 1916 and 1951.  He was born in Port Townsend, Washington and died in Hollywood, California.

Hide-Out (1930 film): Hide-Out is a 1930 American Pre-Code drama film directed by Reginald Barker and written by Lambert Hillyer, Arthur Ripley and Matt Taylor.  The film stars James Murray, Kathryn Crawford, Carl Stockdale, Lee Moran, Guy Edward Hearn and Robert Elliott.  The film was released in April 1930, by Universal Pictures.

Arthur Ripley: Arthur DeWitt Ripley (January 12, 1897 – February 13, 1961) was an American film screenwriter, editor, producer and director.

Supporting paragraphs: Alan James Arthur Ripley
Answer: yes