George Percy, 5th Duke of Northumberland PC, styled Lord Lovaine between 1790 and 1830 and known as the Earl of Beverley between 1830 and 1865, was a British Tory politician. He served as Captain of the Yeomen of the Guard under Sir Robert Peel between 1842 and 1846. He succeeded to his peerage on 12 February 1865, after the death of his childless cousin Algernon Percy.

Algernon George Percy, 6th Duke of Northumberland,, styled Lord Lovaine between 1830 and 1865 and Earl Percy between 1865 and 1867, was a British Conservative politician. He held office under the Earl of Derby as Paymaster General and Vice-President of the Board of Trade in 1859 and under Benjamin Disraeli as Lord Privy Seal between 1878 and 1880.