The story of John Wesley's affair with Grace Murray and how Charles Wesley prevented their marriage by persuading Grace to marry John Bennet, who was one of the key Methodist lay preachers, has long fascinated historians, but most have tended to view John as the victim and been hugely critical of the behaviour and actions of the others involved. Grace has been described as 'impetuous, imperious, and probably a little unstable' and as an 'uneducated,...