Percy, Algernon George, sixth duke of Northumberland (1810–1899), landowner and politician, was born on 29 May 1810 at 37 Grosvenor Place, London, the eldest son of George Percy (1778–1867), second earl of Beverley and fifth duke of Northumberland, and his wife, Louisa Harcourt Stuart Wortley (1781–1848)...
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F. M. L. Thompson
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Algernon George Percy, sixth duke of Northumberland (1810–1899) by James Russell & Sons © National Portrait Gallery, London