Bogart and Hepburn in "The African Queen"

Humphrey DeForest Bogart (December 25, 1899 – January 14, 1957) was an American actor and is widely regarded as a cultural icon. The American Film Institute ranked Bogart as the greatest male star in the history of American cinema.

Katharine Houghton Hepburn (May 12, 1907 – June 29, 2003) was an American actress of film, stage, and television. Known for her headstrong independence and spirited personality, Hepburn's career as a Hollywood leading lady spanned more than 60 years. Her work came in a range of genres, from screwball comedy to literary drama, and she received four Academy Awards for Best Actress—a record for any performer. Hepburn's characters were often strong, sophisticated women with a hidden vulnerability.