Henry Petty-Fitzmaurice 3rd Marquess of Lansdowne KG PC FRS (2 July 1780 – 31 January 1863) known as Lord Henry Petty from 1784 to 1809 was a British statesman. In a ministerial career spanning nearly half a century he notably served as Home Secretary and Chancellor of the Exchequer and was three times Lord President of the Council.
James Stuart-Wortley 1st Baron Wharncliffe, William Lowther 2nd Earl of Lonsdale, James St Clair-Erskine 2nd Earl of Rosslyn, Robert Peel, Spencer Perceval