Earl Erne, of Crom Castle in the County of Fermanagh, is a title in the Peerage of Ireland. It was created in August 1789 for John Creighton, 1st Viscount Erne, who had earlier represented Lifford in the Irish House of Commons. He had succeeded his father as the 2nd Baron Erne, of Crom Castle in the County of Fermanagh, in June 1772, also in the Peerage of Ireland, and was created the 1st Viscount Erne, of Crom Castle, in the County of Fermanagh, in December 1780, again in the Peerage of Ireland. He sat from 1800 to 1828 as an Irish representative peer in the British House of Lords. The title of Baron Erne, of Crom Castle in the County of Fermanagh, was created in the Peerage of Ireland in 1768 for his father Abraham Creighton. The 1st Earl was succeeded by his eldest son, the 2nd Earl. On his death, the titles passed to his nephew, the 3rd Earl. He was an Irish Representative Peer from 1845 to 1885 and also served as Lord Lieutenant of County Fermanagh during the same period. In 1876 he was created Baron Fermanagh, of Lisnaskea in the County of Fermanagh, in the Peerage of the United Kingdom. This was to allow the Earls to sit in the House of Lords by right, rather than having to stand for election as Representative Peers. An earlier title of Baroness Fermanagh in the Peerage of Ireland was created for Mary Verney on 13 June 1792, but became extinct on her death on 15 November 1810.