Duke of Northumberland, dritte Verleihung (1766), Liste der Dukes of Northumberland, Duke of Northumberland, dritte Verleihung (1766.
Hugh Percy, 1. Duke of Northumberland (1714–1786). Hugh Percy, 2. Duke of Northumberland (1742–1817). Hugh Percy, 3. Duke of Northumberland (1785–1847). Algernon Percy, 4. Duke of Northumberland (1792–1865). George Percy, 5. Duke of Northumberland (1778–1867). Algernon George Percy, 6. Duke of Northumberland (1810–1899). Henry George Percy, 7. Duke of Northumberland (1846–1918). Alan Ian Percy, 8. Duke of Northumberland (1880–1930). Henry George Alan Percy, 9. Duke of Northumberland (1912–1940). Hugh Algernon Percy, 10. Duke of Northumberland (1914–1988). Henry Alan Walter Richard Percy, 11. Duke of Northumberland (1953–1995). Ralph George Algernon Percy, 12. Duke of Northumberland (* 1956). . Liste der Dukes of Northumberland.. Duke of Northumberland, dritte Verleihung (1766).. Titelerbe (Heir apparent) ist der Sohn des aktuellen Titelinhabers George Dominic Percy, Earl Percy (* 1984).