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.

Henry George Percy, 7th Duke of Northumberland,, styled Lord Warkworth between 1865 and 1867 and Earl Percy between 1867 and 1899, was a British Conservative politician. He served as Treasurer of the Household under Benjamin Disraeli between 1874 and 1875 and was Chairman of the National Union of Conservative and Constitutional Associations from 1879 to 1883.