Lady Letitia Ponsonby (died 1754) (1720–1754) Parents Brabazon Ponsonby, 1st Earl of Bessborough Sarah Margetson Children Letitia Morres Hervey Redmond Morres, 2nd Viscount Mountmorres Sarah Morres Siblings Lady Sarah Ponsonby Lady Anne Ponsonby John Ponsonby William Ponsonby, 2nd Earl of Bessborough Alicia Colville Partners Hervey Morres, 1st Viscount Mountmorres