Lady Charlotte Ponsonby Peerage person ID=27147 (1750–1822) Parents Lady Caroline Cavendish William Ponsonby, 2nd Earl of Bessborough Children Charles Wentworth-Fitzwilliam, 5th Earl Fitzwilliam Siblings Frederick Ponsonby, 3rd Earl of Bessborough Catherine Beauclerk, Duchess of St Albans Partners William Wentworth Fitzwilliam, 4th Earl Fitzwilliam