Earl of Lanesborough was a title in the Peerage of Ireland. It was created in 1756 for Humphrey Butler, 2nd Viscount Lanesborough. The Butler family descended from Theophilus Butler, who represented County Cavan and Belturbet in the Irish House of Commons. In 1715 he was raised to the Peerage of Ireland as Baron Newtown-Butler, of the County of Fermanagh, with remainder to the heirs male of his father. He was succeeded according to the special remainder by his brother, Brinsley, the second Baron. He had previously represented Kells and Belturbet in the Irish Parliament. In 1728 he was created Viscount Lanesborough in the Peerage of Ireland. He was succeeded by his son, Humphrey, the aforementioned second Viscount, who was elevated to an earldom in 1756. The first Earl was succeeded by his