The title of Marquess of Lansdowne was created in the Peerage of Great Britain in 1784 for William Petty, 2nd Earl of Shelburne, the former Prime Minister.
Lord Lansdowne holds the subsidiary titles of Earl Wycombe, of Chipping Wycombe in the County of Buckingham (1784), Earl of Kerry (1723), Earl of Shelburne (1753), Viscount Calne and Calstone (1784), Viscount Clanmaurice (1723), Viscount FitzMaurice (1751), Baron Wycombe, of Chipping Wycombe in the County of Buckingham (1760), Baron Kerry and Lixnaw (1223), and Baron Dunkeron (1751). The subsidiary titles are all in the Peerage of Ireland, except for the Earldom and Barony of Wycombe and the Viscountcy of Calne and Calstone, which are in the Peerage of Great Britain. The courtesy title for the Lord Lansdowne's eldest son and heir alternates between Earl of Kerry and Earl of Shelburne.
Earls of Shelburne, First Creation (1719)
- Henry Petty, 1st Earl of Shelburne (1675-1751)
Earls of Shelburne, Second Creation (1753)
Marquesses of Lansdowne (1784)
See also: Bowood House
