Earl of Burlington is a title that has been created twice, the first time in the Peerage of England in 1664 and the second in the Peerage of the United Kingdom in 1831. Wikipedia
Creation: Second
First holder: Lord George Cavendish
Heir apparent: William Cavendish, Earl of Burlington (as a courtesy title)
Peerage: Peerage of the United Kingdom
Subsidiary titles: Baron Cavendish