Question: Who was the King of Hollywood who costarred with Joan Crawford in Dancing Lady?

Context paragraphs:
Our Dancing Daughters: Our Dancing Daughters is a 1928 American silent drama film, starring Joan Crawford and John Mack Brown, about the "loosening of youth morals" that took place during the 1920s.  The film was directed by Harry Beaumont and produced by Hunt Stromberg.  This was the film that made Joan Crawford a major star, a position she held for the following half century.

Otis Clark: Otis Clark (February 13, 1903 – May 21, 2012) was one of the last survivors of the May 31, 1921, Tulsa race riot, considered to be the worst ethnic riot in American history.  He later worked as a Hollywood butler for movie stars Clark Gable, Charlie Chaplin, and Joan Crawford.  Clark's wife lived at the Crawford residence working as the cook for Joan Crawford.

Lawrence Hazard: Lawrence Hazard (May 12, 1897 – April 1, 1959) was an American playwright and screenwriter active from 1933 to 1958.  His career was cut short when he died at age 61 in 1959.  His films include "Man's Castle" (1933) directed by Frank Borzage and starring Spencer Tracy and Loretta Young; "Mannequin" (1937) directed by Borzage and starring Joan Crawford and Spencer Tracy; "Strange Cargo" (1940) directed by Borzage and starring Clark Gable and Joan Crawford; "The Spoilers" (1942) starring Marlene Dietrich and John Wayne; "Jackass Mail" (1942) starring Wallace Beery; "Dakota" (1945) starring John Wayne and Walter Brennan, and numerous other films as well as scripts for television anthologies in the 1950s.

Dancing Lady: Dancing Lady is a 1933 American pre-Code musical film starring Joan Crawford and Clark Gable, and featuring Franchot Tone, Fred Astaire, Robert Benchley, and Ted Healy and His Stooges.  The picture was directed by Robert Z. Leonard, produced by John W. Considine Jr. and David O. Selznick, and was based on the novel of the same name by James Warner Bellah, published the previous year.  The movie had a hit song in "Everything I Have Is Yours" by Burton Lane and Harold Adamson.

Mommie Dearest (film): Mommie Dearest is a 1981 American biographical melodrama film which depicts the childhood of Christina Crawford and how she was allegedly abused as a little girl by her adoptive mother, actress Joan Crawford.  Starring Faye Dunaway, Mara Hobel, and Diana Scarwid, the film was directed by Frank Perry.  The story was adapted for the screen by Robert Getchell, Tracy Hotchner, Frank Perry, and Frank Yablans, based on the 1978 autobiography of the same name by Christina Crawford.  The executive producers were Christina's husband, David Koontz, and Terrence O'Neill, Dunaway's then-boyfriend and soon-to-be husband.  The film was distributed by Paramount Pictures, the only one of the "Big 8" film studios for which Crawford had never appeared in a feature film.

Dancing Lady Mountain: Dancing Lady Mountain is a summit in Glacier County, Montana, in the United States.  It is located within Glacier National Park.  With an elevation of 7339 ft , Dancing Lady Mountain is the 1286th highest summit in Montana.

Christina Crawford: Christina Crawford (born June 11, 1939) is an American writer and actress, best known as the author of "Mommie Dearest", an autobiographical account of child abuse by her adoptive mother, actress Joan Crawford.  She is also known for roles in various television and film projects, such as Joan Borman Kane in the soap opera "The Secret Storm" and Monica George in the Elvis Presley film "Wild in the Country".

Clark Gable: William Clark Gable (February 1, 1901 – November 16, 1960) was an American film actor and military officer, often referred to as "The King of Hollywood" or just simply as "The King".  Gable began his career as a stage actor and appeared as an extra in silent films between 1924 and 1926, and progressed to supporting roles with a few films for Metro-Goldwyn-Mayer in 1931.  The next year, he landed his first leading Hollywood role and over the next three decades he became a leading man in more than 60 motion pictures.

The Bride Wore Red: The Bride Wore Red is a 1937 American comedy film directed by Dorothy Arzner, and starring Joan Crawford, Franchot Tone, Robert Young and Billie Burke.  It was based on the unproduced play "The Bride from Trieste" by Ferenc Molnár.  In this "rags to riches" tale, Crawford plays a cabaret singer who poses as an aristocrat.  This film was the last of seven films that Crawford and co-star Franchot Tone, then her husband, would make together.

Joan Crawford: Joan Crawford (born Lucille Fay LeSueur; (March 23, 190?  – May 10, 1977) was an American film and television actress who began her career as a dancer and stage showgirl.  In 1999, the American Film Institute ranked Crawford tenth on its list of the greatest female stars of Classic Hollywood Cinema.

Supporting paragraphs: Dancing Lady Clark Gable
Answer: William Clark Gable