William Ponsonby, 1st Baron Ponsonby British politician (1744–1806) Parents Lady Elizabeth Cavendish John Ponsonby Children George Ponsonby John Ponsonby, 1st Viscount Ponsonby Richard Ponsonby Mary Grey, Countess Grey Frederick Ponsonby William Ponsonby Siblings Catharine Ponsonby George Ponsonby Mary Charlotte Ponsonby Frances Ponsonby Partners Louisa Molesworth
