Which famous 20th century author served as a brand ambassador for Guinness beer in the 1930s, featuring in advertisements with the slogan 'Guinness is good for you'?

The world of literature doesn't exist in isolation from commerce. Over the years, many renowned authors have formed strategic partnerships with brands, lending their prestige and cultural capital to everything from luxury goods to everyday products. This trivia question explores a notable partnership that bridged the gap between literary prestige and commercial branding. Test your knowledge of these unexpected intersections between literature and advertising!

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Dorothy Parker
Ernest Hemingway
Dorothy L. Sayers
F. Scott Fitzgerald