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,
John Campbell, 2nd Earl of Breadalbane and Holland John Campbell, 2nd Earl of Breadalbane and Holland John Campbell, 2nd Earl of Breadalbane and Holland (19 November 1662 – 23 February 1752) a Scottish nobleman born in Breadalbane to John Campbell, 1st Earl of Breadalbane and Holland and Lady Mary Rich. In 1685 he married Lady Frances Cavendish, daughter of Henry Cavendish, 2nd Duke of Newcastle-upon-Tyne and Lady Frances Pierrepont. With no issue Lady Frances died on 4 February 1690. On 23 May 1695 the Earl married a second time to Henrietta Villiers, daughter of Edward Villiers and Lady Frances Howard. They had three children including John Campbell, 3rd