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. He was the son of the Hon. Christopher Carleton, eldest son of the first Baron. Lord Dorchester died unmarried at an early age and was succeeded by his first cousin, the third Baron. He was the son of the Hon. George Carleton, younger son of the first Baron. He had no sons and was succeeded by his first cousin, the fourth Baron. He was the son of Reverend the Hon. Richard Carleton, younger son of the first Baron. Lord Dorchester was a Colonel in the
Coldstream Guards. He was childless and the title became extinct on his death on 13 November 1897.