Which famous 20th century author served as a brand ambassador for Guinness beer in the 1930s, even writing a slogan that became one of advertising's most famous lines?

Throughout literary history, famous authors have occasionally served as brand ambassadors or had notable relationships with commercial products. These partnerships have sometimes influenced their work, provided financial stability, or sparked controversy. This trivia question explores an interesting connection between a renowned author and their unexpected commercial endorsement. Test your knowledge of these unusual intersections between literature and advertising!

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