Baron Dorchester was a title that was created twice in British history, once in the Peerage of Great Britain and once in the Peerage of the United Kingdom. The first creation came in the Peerage of Great Britain on 21 August 1786 when the soldier and administrator Sir Guy Carleton was made Lord Dorchester, Baron of Dorchester, in the County of Oxford. He was succeeded by his grandson, the second Baron.
The title of Baron Dorchester was created twice in British history, once within the Peerage of Great Britain and once within the Peerage of the United Kingdom. The first creation occurred on August 21, 1786, within the Peerage of Great Britain when Sir Guy Carleton was made Lord Dorchester, Baron of Dorchester, in the County of Oxford. He was succeeded by his grandson, the second Baron.