Frances Villiers, Countess of Jersey his "wife", Maria Fitzherbert, with whom he had undergone a form of marriage in a clandestine Church of England ceremony that all parties to it knew was invalid under the Royal Marriages Act 1772. Having encouraged the Prince of Wales to marry his first cousin, Caroline of Brunswick in 1794, Lady Jersey nevertheless set out to make Caroline's life difficult. However, the now Princess of Wales (Caroline) had very little regard for George IV, nor he for her, and after the birth of their child, they lived apart during their twenty-five year marriage, leaving a void Frances and other mistresses,
Mary Villiers, Duchess of Buckingham Mary Villiers, Duchess of Buckingham Mary Villiers, Duchess of Buckingham (30 July 1638 – 20 October 1704), formerly Mary Fairfax, was the wife of George Villiers, 2nd Duke of Buckingham. Mary was the daughter of Thomas Fairfax, 3rd Lord Fairfax of Cameron, and his wife Anne. She was baptised at St Mary Bishophill Junior, York, on 1 August 1638. During the 1650s, she was tutored by Andrew Marvell. Mary was to have married Philip Stanhope, 2nd Earl of Chesterfield, but developed a preference for Buckingham, whom she married on 15 September 1657 at Bolton Percy, following his return from exile.