The twice-widowed Fitzherbert soon entered London high society. In spring, 1784, she was introduced to a youthful admirer: George, Prince of Wales, six years her junior. The prince became infatuated with her and pursued her endlessly until she agreed to marry him. Secretly, and – as both parties were well aware – against the law, they went through a form of marriage on 15 December 1785, in the drawing room of her house in Park Street, London. Her uncle, Henry Errington, and her brother, John Smythe, were the witnesses. This invalid marriage ceremony was performed by one of the prince's Chaplains in Ordinary, the Reverend Robert Burt, whose debts (of £500) were paid by the prince to release him from the Fleet Prison.