Question: Who began his film career earlier, Clarence G. Badger, or Don Siegel?

Context paragraphs:
The Venus Model: The Venus Model is a 1918 American silent romantic comedy film starring Mabel Normand and directed by Clarence G. Badger.  The film was made at the beginning of the 20th century when Goldwyn Pictures and many early film studios in America's first motion picture industry were based in Fort Lee, New Jersey.  It is not known whether the film currently survives, and it may be a lost film.

The Golden Princess: The Golden Princess is a lost 1925 American Western silent film directed by Clarence G. Badger and written by Frances Agnew and Bret Harte.  The film stars Betty Bronson, Neil Hamilton, Phyllis Haver, Joseph J. Dowling, Edgar Kennedy, George Irving and Norma Wills.  The film was released on October 5, 1925, by Paramount Pictures.

Quincy Adams Sawyer: Quincy Adams Sawyer was a 1922 American silent comedy-drama film directed by Clarence G. Badger.  Distributed by Metro Pictures, the film is based on the 1900 novel "Quincy Adams Sawyer and Mason's Corner Folks", written by Charles Felton Pidgin.  The film was re-released in 1927, after LaMarr's death, by Metro-Goldwyn-Mayer, and is now considered a lost film.

One Night in Rome: One Night in Rome is a 1924 film starring Laurette Taylor.  The film was directed by Clarence G. Badger and written J. Hartley Manners, Ms. Taylor's husband, based upon his play.  Laurette Taylor was a great name of the American theatre, who made only three films in a triumph-studded career, all of them derived from plays by her husband.  This was the last of those three films (the previous two had been done by Metro Pictures).  Ms. Taylor seems to have enjoyed making "One Night in Rome" as she kept a personal print of the movie to always show guests at her home, re-running it over and over again.

The Hot Heiress: The Hot Heiress is a 1931 American Pre-Code comedy film directed by Clarence G. Badger and written by Herbert Fields.  The film stars Ben Lyon, Ona Munson, Walter Pidgeon, Tom Dugan, Holmes Herbert and Inez Courtney.  The film was released by Warner Bros. on March 28, 1931.

Man Power: Man Power is a lost 1927 American comedy silent film directed by Clarence G. Badger and written by Ray Harris, Louise Long, George Marion Jr., Sam Mintz and Byron Morgan.  The film stars Richard Dix and features Mary Brian, Philip Strange, Charles Hill Mailes, Oscar Smith and George Irving.  The film was released on July 9, 1927, by Paramount Pictures.

The Rainmaker (1926 film): The Rainmaker is a lost 1926 American drama silent film directed by Clarence G. Badger and written by Gerald Beaumont, Louis D. Lighton and Hope Loring.  The film stars William Collier, Jr., Georgia Hale, Ernest Torrence, Brandon Hurst, Joseph J. Dowling and Tom Wilson.  Te film was released on May 10, 1926, by Paramount Pictures.

The Shooting of Dan McGrew (1924 film): The Shooting of Dan McGrew is an extant 1924 silent drama film directed by Clarence G. Badger.  Distributed by Metro Pictures final film, the film is based on the 1907 poem of the same name written by Robert W. Service.  The film is preserved.

Don Siegel: Donald Siegel ( ; October 26, 1912 – April 20, 1991) was an American film director and producer.  His name variously appeared in the credits of his films as both Don Siegel and Donald Siegel.  He is best known for the original sci-fi film "Invasion of the Body Snatchers" (1956), as well as five films with Clint Eastwood, including the police thriller "Dirty Harry" (1971) and the prison drama "Escape from Alcatraz" (1979), and John Wayne's final film the 1976 Western "The Shootist".

Clarence G. Badger: Clarence G. Badger (June 9, 1880 – June 17, 1964) was an American film director of feature films in the 1910s, 1920s and 1930s.  His films include "It" and "Red Hair", more than a dozen features and shorts starring Will Rogers, and two features starring Raymond Griffith, "Paths to Paradise" and "Hands Up! "

Supporting paragraphs: Clarence G. Badger Don Siegel
Answer: Clarence G. Badger