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,
Maria Villiers, Countess of Clarendon Maria Villiers, Countess of Clarendon Maria Villiers, Countess of Clarendon (23 January 1761 – 18 March 1844), formerly Maria Eleanor Forbes, was the wife of John Villiers, 3rd Earl of Clarendon. Maria was the daughter and co-heir of Admiral Hon. John Forbes and his wife, the former Lady Mary Capell, daughter of William Capell, 3rd Earl of Essex. Her mother and the earl's mother being sisters, she and the earl were first cousins. They married on 5 January 1791, and had one daughter, Mary-Harriet, who never married and died in 1838. The earl died in 1838 and was succeeded by