Mary Grey, Countess Grey British aristocrat and wife of Charles Grey, 2nd Earl Grey (1776-1861) (1776–1861) Parents Louisa Molesworth William Ponsonby, 1st Baron Ponsonby Children Louisa Grey Frederick Grey George Grey Francis Grey William Grey Charles Grey John Grey Lady Georgiana Grey Henry Grey, 3rd Earl Grey Lady Mary Grey Elizabeth Bulteel William George Grey Lady Caroline Grey Henry Cavendish Grey Thomas Grey Siblings George Ponsonby John Ponsonby, 1st Viscount Ponsonby William Ponsonby Richard Ponsonby Frederick Ponsonby Partners Charles Grey, 2nd Earl Grey
