Question: Which director was also a screenwriter, Ivan Reitman or Harry Beaumont?

Context articles: Meatballs (film)
Enchanted April (1935 film)
Ivan Reitman
Harry Beaumont
John Dunning (film producer)
His Majesty, Bunker Bean (1925 film)
Jason Reitman
Memoirs of an Invisible Man (film)
Legal Eagles
Foxy Lady (film)

Meatballs is a 1979 Canadian comedy film directed by Ivan Reitman.
 It is noted for Bill Murray's first film appearance in a starring role and for launching the directing career of Reitman whose later comedies included "Stripes" (1981) and "Ghostbusters" (1984), both starring Murray.
 The film also introduced child actor Chris Makepeace in the role of Rudy Gerner.
 It was followed by several sequels, of which only "" (1986) had any connection to the original.
Enchanted April is a 1935 American comedy drama film directed by Harry Beaumont and starring Ann Harding, Frank Morgan and Katharine Alexander.
 It was made by RKO Pictures.
 The original 1922 novel "The Enchanted April" has also been adapted for the stage multiple times, and adapted for the 1992 film by screenwriter Peter Barnes.
Ivan Reitman, OC (born October 27, 1946) is a Slovak-Canadian film producer and director, best known for his comedy work, especially in the 1980s and 1990s.
 He is the owner of The Montecito Picture Company, founded in 1998.
Harry Beaumont (February 10, 1888 – December 22, 1966) was an American film director, actor, and screenwriter.
 He worked for a variety of production companies including Fox, Goldwyn, Metro, Warner Brothers, and Metro-Goldwyn-Mayer.
John Dunning (April 27, 1927–September 19, 2011) was a pioneering Canadian film producer from Montreal who co-founded the Canadian film production company Cinépix and produced early works by notable Canadian directors David Cronenberg and Ivan Reitman.
 Dunning launched Cinépix with partner André Link in Montreal in the early 1960s.
 Their biggest commercial success—and the first Canadian box office hit—came with Reitman’s "Meatballs" (1979).
His Majesty, Bunker Bean is a 1925 silent film comedy directed by Harry Beaumont and starring Matt Moore.
 It is based on a 1916 play, "His Majesty, Bunker Bean" by Lee Wilson Dodd, taken from a novel "Bunker Bean" by Harry Leon Wilson.
 It was produced and distributed by Warner Brothers.
Jason Reitman ( ; born October 19, 1977) is a Canadian-American film director, screenwriter, and producer, best known for directing the films "Thank You for Smoking" (2005), "Juno" (2007), "Up in the Air" (2009), and "Young Adult" (2011).
 As of February 2, 2010, he has received one Grammy Award and four Academy Award nominations, two of which are for Best Director.
 Reitman is a dual citizen of Canada and the United States.
 He is the son of director Ivan Reitman.
Memoirs of an Invisible Man is a 1992 American comedy science fiction film directed by John Carpenter and released by Warner Bros., with many scenes taking place in and around San Francisco.
 The film is loosely based on "Memoirs of an Invisible Man", a 1987 novel by H.F. Saint.
 According to William Goldman's book "Which Lie Did I Tell?
", the film was initially developed for director Ivan Reitman; however, this version never came to fruition, due to disagreements between Reitman and Chevy Chase.
 The director deviated from his usual practice of titling the film as "John Carpenter's" because he knew that Warner Brothers would not allow him full artistic control, saying that the studio "is in the business of making audience-friendly, non-challenging movies."
Legal Eagles is a 1986 American legal crime comedy film directed by Ivan Reitman, written by Jim Cash and Jack Epps, Jr. from a story by Reitman and the screenwriters, and starring Robert Redford, Debra Winger, and Daryl Hannah.
Foxy Lady is a 1971 film directed by Ivan Reitman.
 It was Ivan Reitman's debut feature film and was also the first film appearance of Eugene Levy.