Brabazon Ponsonby, 1st Earl of Bessborough Member Irish House of Commons (1679–1758) Parents Mary Moore William Ponsonby, 1st Viscount Duncannon Children William Ponsonby, 2nd Earl of Bessborough Lady Sarah Ponsonby Lady Anne Ponsonby Lady Letitia Ponsonby John Ponsonby Siblings Folliet Ponsonby Henry Ponsonby Anne Ponsonby Bridget Ponsonby Dorothy Ponsonby Mary Ponsonby Elizabeth Ponsonby Letitia Ponsonby Partners Sarah Margetson Elizabeth Sankey