Letters to the 3rd Duke of Portland and his son, Lord William Bentinck, from Irish correspondents or on Irish topics, 1763-1807. Correspondence includes letters to Portland from the 4th Earl of Darnley, 1794-1795; letters to Portland from the 4th Earl of Fitzwilliam, 1794-1795; letters to Portland from the Hon. Thomas Pelham, 1795-1796; letters to Portland from the 2nd Earl Camden, 1795-1808.