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Duke of Devonshire - Wikipedia, the free encyclopedia |
 | | The Duke of Devonshire's eldest son may use the courtesy title Marquess of Hartington, whilst the eldest son of the eldest son may use the title Earl of Burlington; any sons he may have would use the title Lord Cavendish. |
 | | The Marquessate of Hartington, the Earldom of Devonshire and the Barony of Cavendish of Hardwick are in the peerage of England, while the Earldom of Burlington and the Barony of Cavendish of Keighley are in the peerage of the United Kingdom. |
 | | The Earldom of Devonshire was originally granted as a recreation of the title of Earl of Devon, then held to be extinct; but which was found to have been in existence de jure in 1831. |
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