Wolf Hall is fictionalized biography of an important figure in the court of King Henry VIII of England, Thomas Cromwell. There are lots of book blog posts on this novel and over 700 Amazon reviews so I will not add to this volume very much. Much of the plot action of the book centers around the king's wish for a divorce. It follows carefully the facts of Cromwell's life and lets us see how the court and the clerics worked and interacted. It is set in the 1520s.
This is universally regarded as first rate historical fiction and I will just say I agree with the consensus. I hope to read Brings Up the Bodies in 2013.