Question: What occupation did Raoul Walsh and Roy Rowland share?

Context paragraphs:
Roy Rowland (film director): Roy Rowland (December 31, 1910 – June 29, 1995) was an American film director.  The New York-born director helmed a number of films in the 1950s and 1960s including "Our Vines Have Tender Grapes", "Meet Me in Las Vegas", "Rogue Cop", "The 5000 Fingers of Doctor T" and "The Girl Hunters".  Rowland married Ruth Cummings, the niece of Louis B. Mayer and sister of Jack Cummings (MGM producer/director).  They had one son, Steve Rowland, born in 1932, who later became a music producer in the UK, and has recently published his memoir "Hollywood Heat".

The Serpent (1916 film): The Serpent was a 1916 American silent drama film directed by Raoul Walsh and starring Theda Bara.  The film based on the short story "The Wolf's Claw", by Philip Bartholomae, and its scenario was written by Raoul A. Walsh.  Produced and distributed by Fox Film Corporation, "The Serpent" was shot on location at Chimney Rock, North Carolina, and at the Fox Studio in Fort Lee, New Jersey.  It is now considered lost.

Dark Command: Dark Command is a 1940 Western film starring Claire Trevor, John Wayne and Walter Pidgeon loosely based on Quantrill's Raiders during the American Civil War.  Directed by Raoul Walsh from the novel by W.R. Burnett, "Dark Command" is the only film in which western icons John Wayne and Roy Rogers appear together, and was the only film Wayne and Raoul Walsh made together since Walsh discovered Wayne working as a prop mover, renamed him, and gave him his first leading role in the widescreen western "The Big Trail" a decade before.

Esther and the King: Ester e il re (English Translation: "Esther and the King") is a 1960 Italian / American international co-production religious epic film directed (with Mario Bava, the film's director of photography, who was credited as a co-director on Italian prints of the film), written, and produced by Raoul Walsh.  It was made in Cinemascope and DeLuxe Color, and produced at 20th Century Fox/ Raoul Walsh Productions, and was released by 20th Century Fox.  Joan Collins stars as Esther.  Based on the Old Testament, this epic recreates the Book of Esther, the tale that is the basis for the Jewish celebration of Purim.

Marines, Let's Go: Marines, Let's Go is a 1961 CinemaScope colour Korean War film about three Marine buddies (Tom Tryon, David Hedison and Tom Reese) on shore leave in Japan and at war in Korea.  It was produced and directed by Raoul Walsh, who also wrote the story.  Walsh had previously had successes with films about the U.S. Marine Corps in World War I ("What Price Glory? "), the 1920s ("The Cock-Eyed World" and "Sadie Thompson"), and World War II ("Battle Cry").  This was the next-to-last film of Walsh's long directing career.

The Naked and the Dead (film): The Naked and the Dead is a 1958 Technicolor widescreen film based on Norman Mailer's World War II novel "The Naked and the Dead".  Directed by Raoul Walsh and filmed in Panama, the screenplay attributed to the Sanders brothers adds a strip tease and action scenes to Mailer's original narrative.  Made by RKO just before its demise, the film was released by Warner Brothers and was the last one Raoul Walsh directed for that studio.

Dennis Rowland: Dennis Rowland is a jazz vocalist born and raised in Detroit.  Having grown up in a household of jazz enthusiasts, Rowland developed an appreciation for Jazz music at an early age.  At the age of five or six Rowland heard the vocals of Joe Williams of the Count Basie Orchestra, which has influenced his approach to singing ever since.  Rowland's voice is rich and deep, and throughout the early 1970s, Rowland worked Detroit's local jazz and acting scene.  In 1977 Rowland was hired by Count Basie as a vocalist on his tours, filling the same role his idols Joe Williams and Jimmy Rushing had occupied for so many years.  For Rowland, it was a dream come true and he would tour with Basie for the following seven years.  During his time with Basie, Rowland had the chance to share the stage with such icons as Sarah Vaughan, Ella Fitzgerald and Tony Bennett.  Rowland was seen recently as Jimmy Baker in the film "Real Gone Cat" by film director Robert Sucato.  He currently resides and performs regularly in Phoenix, Arizona.

Kindred of the Dust: Kindred of the Dust is a 1922 American silent film directed by Raoul Walsh, and starring his wife Miriam Cooper.  It was based upon the novel of the same name by Peter B. Kyne.  The film was the last independent picture for Walsh's production company, and the last film he and Cooper would make together.  Today it is one of Walsh's earliest surviving features, and is one of only two non-D. W. Griffith features of Cooper's that still is known to survive.

Steve Rowland (record producer): Steve Rowland (born Stephen Jacob Rowland, 3 September 1932, Los Angeles, California, United States) is an American singer, columnist, record producer and actor.  He grew up in Beverly Hills and now lives in Palm Springs, California.  His father is film director Roy Rowland, his mother Ruth was a writer, whilst Louis B. Mayer was her uncle.

Raoul Walsh: Raoul A. Walsh (March 11, 1887December 31, 1980) was an American film director, actor, founding member of the Academy of Motion Picture Arts and Sciences (AMPAS) and the brother of the silent screen actor George Walsh.  He was known for portraying John Wilkes Booth in the silent classic "The Birth of a Nation" (1915) and for directing such films as "The Big Trail" (1930), starring John Wayne, "High Sierra" (1941), starring Ida Lupino and Humphrey Bogart; and "White Heat" (1949), starring James Cagney and Edmond O'Brien.  He directed his last film in 1964.

Supporting paragraphs: Raoul Walsh Roy Rowland (film director)
Answer: film director