Amanda Foreman is a British/American biographer. While working as a researcher in Oxford in 1998, she published her first book, Georgiana, Duchess of Devonshire, based on her doctoral thesis. The book received wide critical acclaim, was a bestseller and won the 1998 Whitbread Prize for Best Biography. The book has been the subject of a television documentary, a highly successful radio play, starring Judi Dench, and a film, The Duchess, starring Ralph Fiennes and Keira Knightley. Her history of British volunteers in the American Civil War, A World on Fire was published in 2010.