Baron Carleton is a title that has been created three times in British history, once in the Peerage of Ireland and twice in the Peerage of Great Britain. The first creation came in the Peerage of England in 1626 when Sir Dudley Carleton was made Baron Carleton, of Imbercourt in the County of Surrey. He was made Viscount Dorchester two years later. See the article on him for more information on this creation. Dudley Carleton was the first cousin of Sir John Carleton, 1st Baronet (see Carleton baronets).