Frederick Cavendish Ponsonby British Army officer (1783–1837) Parents Henrietta Ponsonby, Countess of Bessborough Frederick Ponsonby, 3rd Earl of Bessborough Children Henry Ponsonby Harriet Julia Frances Ponsonby Selina Barbara Wilhelmina Ponsonby Siblings John Ponsonby, 4th Earl of Bessborough William Ponsonby, 1st Baron de Mauley Lady Caroline Lamb Harriet Osborne, Baroness Godolphin George Arundel Stewart Partners Lady Emily Charlotte Bathurst
