Film stars Clive Owen and Nicole Kidman have been cast in an upcoming HBO film about late U.S. author Ernest Hemingway, TVGuide.com said.

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James Gandolfini, former star of the cable network's iconic drama "The Sopranos," is to executive produce "Hemingway & Gellhorn," a film about the courtship and 5-year marriage of Hemingway and

war correspondent Martha Gellhorn, the Web site said.

The movie is slated to begin shooting next year.

Hemingway -- the Pulitzer Prize-winning author of "The Old Man and the Sea," "For Whom the Bell Tolls," "To Have and Have Not," "The Sun Also Rises" and "A Farewell to Arms" -- committed suicide in 1961 at age 61.