Question: In what year was the actor who portrayed Rhett Butler in "Gone with the Wind" born?

Context articles: AFI's 100 Years...100 Movie Quotes
Idiot's Delight (film)
Rhett the Boston Terrier
Gone with the Wind (film)
Clark Gable
Boston University Terriers
Frankly, my dear, I don't give a damn
Ashley Wilkes
Siegfried Schürenberg
Rhett Butler's People

Part of The American Film Institute (AFI 100 Years... series), AFI's 100 Years... 100 Movie Quotes is a list of the top 100 movie quotations in American cinema.
 The American Film Institute revealed the list on June 21, 2005, in a three-hour television program on CBS.
 The program was hosted by actor Pierce Brosnan and had commentary from many Hollywood actors and filmmakers.
 A jury consisting of 1,500 film artists, critics, and historians selected "Frankly, my dear, I don't give a damn," spoken by Clark Gable as Rhett Butler in the 1939 American Civil War epic "Gone with the Wind" as the most memorable American movie quotation of all time.
Idiot's Delight is a 1939 MGM comedy-drama with a screenplay adapted by Robert E. Sherwood from his 1936 Pulitzer-Prize-winning play of the same name.
 The movie showcases Clark Gable, in the same year that he played Rhett Butler in "Gone With the Wind", and Norma Shearer in the declining phase of her career.
 Although not a musical, it is notable as the only film where Gable sings and dances, performing "Puttin' on the Ritz" by Irving Berlin.
Rhett is the official costumed mascot of the Boston University (BU) and the Boston University Academy (BUA) Terriers.
 The Boston Terrier has been the BU mascot since 1922.
 The often snarling, bi-pedal black and white Boston Terrier was later named after the male lead in Margaret Mitchell's "Gone with the Wind", because "No one loves Scarlett more than Rhett" referencing Rhett Butler's affection for Scarlett O'Hara (scarlet is BU's primary color).
 In recent years Rhett has frequented Boston University games, events, and dining halls wearing his scarlet and white double-zero hockey jersey.
 Other outfits include a basketball jersey and a referee uniform (typically worn during the short youth hockey games that take place during ice hockey intermissions).
 However, he is also known to enjoy wearing his scarlet superhero cape when the occasion presents itself.
 Like all mascots, Rhett and the Terrier logo are ubiquitous at athletic events.
 The Terriers play varsity Division I intercollegiate sports in ten men's and twelve women's programs.
 Rhett's nemesis is Baldwin, the Boston College eagle.
Gone with the Wind is a 1939 American epic historical romance film adapted from Margaret Mitchell's 1936 novel of the same name.
 The film was produced by David O. Selznick of Selznick International Pictures and directed by Victor Fleming.
 Set in the American South against the backdrop of the American Civil War and Reconstruction era, the film tells the story of Scarlett O'Hara, the strong-willed daughter of a Georgia plantation owner, from her romantic pursuit of Ashley Wilkes, who is married to his cousin, Melanie Hamilton, to her marriage to Rhett Butler.
 The leading roles are portrayed by Vivien Leigh (Scarlett), Clark Gable (Rhett), Leslie Howard (Ashley), and Olivia de Havilland (Melanie).
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 Boston University Terriers are the ten men's and fourteen women's varsity athletic teams representing Boston University in NCAA Division I competition.
 Boston University's team nickname is the Terriers, and the official mascot is Rhett the Boston Terrier.
 The school colors are Scarlet and White.
 The mascot is named Rhett after Rhett Butler from "Gone With the Wind", because "no one loves Scarlet more than Rhett."
"Frankly, my dear, I don't give a damn" is a line from the 1939 film "Gone with the Wind" starring Clark Gable and Vivien Leigh.
 The line is spoken by Rhett Butler (Gable), as his last words to Scarlett O'Hara (Leigh), in response to her tearful question: "Where shall I go?
 What shall I do?"
 Scarlett clings to the hope that she can win him back.
 This line is also partially spoken by Rhett Butler in Margaret Mitchell's novel "Gone with the Wind", published in 1936, from which the movie is derived.
George Ashley Wilkes is a fictional character in Margaret Mitchell's 1936 novel "Gone with the Wind" and the later film of the same name.
 The character also appears in the 1991 book "Scarlett", a sequel to "Gone with the Wind" written by Alexandra Ripley, and in "Rhett Butler's People" by Donald McCaig.
Siegfried Schürenberg (12 January 1900 – 31 August 1993) was a German film actor.
 He appeared in 83 films between 1933 and 1974.
 He was born in Detmold, Germany and died in Berlin, Germany.
 Although he never played leading roles, he was a well-known supporting actor who played the role of Sir John in numerous Edgar Wallace films during the 1960s.
 He was also a busy dubbing actor, for example as the German voice for Clark Gable in most of his films, including Rhett Butler in "Gone with the Wind".
Rhett Butler's People by Donald McCaig is an authorized sequel to "Gone with the Wind".
 It was published in November 2007.