Rory Mallinson (October 27, 1913 – March 26, 1976) was an American actor of film and television.
 Born on October 27, 1913 in Atlanta, Georgia, Mallinson would begin his acting career after signing a contract with Warner Brothers in 1945.
 That year he would have a small role in the film, "Pride of the Marines", starring John Garfield and Eleanor Powell.
 Mallinson would continue making films through the 1940s, and throughout the 1950s, appearing in over 90 films during this period.
 Notable films in which he would perform include: a featured role in the 1947 film noir "Dark Passage", starring Humphrey Bogart and Lauren Bacall; "Mighty Joe Young" (1949); the Abbott and Costello vehicle, "Abbott and Costello Meet the Invisible Man" (1951); the 1952 western, "Springfield Rifle", starring Gary Cooper; and Howard Hawks' 1952 film, "The Big Sky", which stars Kirk Douglas, Dewey Martin, and Elizabeth Threatt.
 In the early 1950s, he also had a featured role in the film serial, "Blackhawk".
 His final performance in the film industry would be in the western, "Westbound" (1959), starring Randolph Scott and Virginia Mayo.
 During the 1960s, his career diminished, and he would only make a handful of guest appearances on several television series during the decade, including performances on "Cheyenne" and "Mannix".
 Mallinson died on March 26, 1976 in Los Angeles, California.
Robert Cuccioli (born May 3, 1958) is an American actor and singer born in Hempstead, New York.
 He is best known for originating the lead dual title roles in the musical "Jekyll and Hyde", for which he received a Tony Award nomination and won the Joseph Jefferson Award, the Outer Critics Circle Award, the Drama Desk Award, and the Fany Award.
Jonathan Drew Groff (born March 26, 1985) is an American actor and singer.
The Conspirator is a 2010 American mystery historical drama film directed by Robert Redford based on an original screenplay by James D. Solomon.
 It is the debut film of the American Film Company.
 The film tells the story of Mary Surratt, the only female conspirator charged in the Abraham Lincoln assassination and the first woman to be executed by the United States federal government.
 It stars James McAvoy, Robin Wright, Justin Long, Evan Rachel Wood, Jonathan Groff, Tom Wilkinson, Alexis Bledel, Kevin Kline, John Cullum, Toby Kebbell, and James Badge Dale.
Bill Dillard (born July 20, 1911 – 1995) was an American swing music jazz trumpeter, actor and singer born in Pennsylvania, probably better known for his work with the big bands of Benny Carter, Luis Russell and Teddy Hill, among others.
 He also had an acting career on Broadway.
Marissa Perry (born May 5, 1985) is an American actress and singer born in Waterbury, Connecticut.
Carol Sloane (born March 5, 1937) is an American jazz singer born in Providence, Rhode Island, who has been singing professionally since she was 14, although for a time in the 1970s she worked as a legal secretary in Raleigh, North Carolina.
 In addition, between September 1967 and May 1968, she occasionally wrote album reviews for "Down Beat".
 She currently lives in Stoneham, Massachusetts.
Scott Irby-Ranniar (born September 15, 1984) is an American actor and singer born in Harlem, New York.
 He is well known for originating the role of Young Simba in the Broadway production of The Lion King in 1997.
 He is a former member of the band Steel Train.
Clarence Lofton (March 28, 1887, 1896 or 1897 – January 9, 1957), credited as Cripple Clarence Lofton, was an American boogie-woogie pianist and singer born in Tennessee.
Anna Simpson (born March 23, 1985) is an American actress and singer born in Brooklyn, New York.
 She is best known for the film, "Our Song", alongside Kerry Washington and Melissa Martinez (2000).
 She has a daughter named Chasity who she gave birth to at the age of 15.
 Simpson is a survivor of sexual abuse.

Question: The Conspirator stars which American actor and singer born on March 26, 1985?
Answer: Jonathan Groff