Question: As well as directing, who also had a career as an actor, Michael Dolan or William K. Howard?
Context: Sin Town is a 1929 American silent western film directed by J. Gordon Cooper and William K. Howard and starring Elinor Fair, Ivan Lebedeff and Hugh Allan.  It is a contemporary-set Western, in which two World War I veterans are wrongly accused of killing a rancher and arrested for murder.  With the help of the rancher's daughter they escape and capture the real culprit. Rendezvous is a 1935 spy film set in World War I, directed by William K. Howard, starring William Powell and Rosalind Russell and featuring Binnie Barnes, Lionel Atwill, Cesar Romero and Samuel S. Hinds.  Powell plays an American cryptologist who tangles with German spies while falling in love. Sherlock Holmes is a 1932 American Pre-Code film starring Clive Brook as the eponymous London detective.  The movie is based on the successful stage play "Sherlock Holmes" by William Gillette, in turn based on the stories by Arthur Conan Doyle, and is directed by William K. Howard for the Fox Film Corporation.  Brook had played Holmes three years previously in "The Return of Sherlock Holmes". Pendleton Heights, also known as the William K. Pendleton House and Christman Manor at Pendleton Heights, is a historic home located on the campus of Bethany College, at Bethany, Brooke County, West Virginia.  It was built in 1841, as a small, box like dwelling.  It was altered in 1872 by college president William K. Pendleton to take on a Gothic Revival-style of architecture like other buildings on campus.  It is a two story brick residence with characteristic steep gable roofs and arched windows. Michael Dolan (born June 21, 1965) is an American theatre and film actor, director and educator from Oklahoma City, Oklahoma, United States. The Valiant is an American drama film released by Fox Film Corporation in the Fox Movietone sound-on-film system on May 19, 1929.  It is produced and directed by William K. Howard (his first sound film) and stars Paul Muni (in his film debut), Marguerite Churchill and John Mack Brown.  Although described by at least one source as a silent film containing talking sequences, synchronized music and sound effects, "The Valiant" has continuous dialogue and is a full "talkie", made without a corresponding silent version. William K. Howard (June 16, 1899 – February 21, 1954) was an American film director, writer, and producer.  Considered one of Hollywood's leading directors, he directed over 50 films from 1921 to 1946, including "The Thundering Herd" (1925), "The Power and the Glory" (1933), "Fire Over England" (1937), and "Johnny Come Lately" (1943). Money and the Woman is a 1940 American drama film directed by William K. Howard and written by Robert Presnell Sr..  The film stars Jeffrey Lynn, Brenda Marshall, John Litel, Lee Patrick, Henry O'Neill and Roger Pryor.  The film was released by Warner Bros. on August 17, 1940. The William K. Eastman House, also known as the Eastman-Lord House, is a historic house museum at 100 Main Street in Conway, New Hampshire.  Built in 1818, it was the home of William K. Eastman, a prominent local businessman, politician, and civic leader until his death in 1879.  Now home to the Conway Historical Society, it was listed on the National Register of Historic Places in 2001. Johnny Come Lately is a 1943 drama film directed by William K. Howard starring James Cagney, Grace George and Marjorie Main.  It was the first film produced by William Cagney Productions in March 1943.
Answer: Michael Dolan