Katherine Swynford is one of the most famous and enigmatic of medieval women.  She has strong connections with Lincolnshire although born around 1350; daughter of Payn de Roet, a knight from Hainault,  in the Holy Roman Empire, later known as part of Belgium. 

She became mistress of John of Gaunt, one of the most powerful men in England, she later married him in Lincoln Cathedral.  Mother of Henry Beaufort, Bishop of Lincoln, her tomb can be seen in the Cathedral.  This book details her extraordinary life and that of those around her.