Katherine (Seton novel)

Katherine is a 1954 historical novel by American author Anya Seton. It tells the story of the historically important, 14th-century love affair in England between the eponymous Katherine Swynford and John of Gaunt, Duke of Lancaster, the third surviving son of King Edward III.

At the time of its publication, Kirkus Reviews called it the author's "most distinguished book". In 2003, Katherine was ranked 95 in the BBC's Big Read survey of Britain's best-loved novels. It is commonly regarded as a prime example of historical fiction and has been continuously in print since its publication date.