Hugh Algernon Percy, 10th Duke of Northumberland

Hugh Algernon Percy, 10th Duke of Northumberland, KG, GCVO, PC, TD, FRS (6 April 1914 – 11 October 1988), was the son of Alan Percy, 8th Duke of Northumberland, and Lady Helen Gordon-Lennox. He succeeded to the dukedom of Northumberland in 1940, when his brother Henry, the 9th Duke, was killed in Belgium in World War II during the retreat to Dunkirk.

He was commissioned into the Northumberland Hussars. In 1940, as a Lieutenant, he transferred to the Royal Artillery. In 1947, as a Captain, he transferred back to the Northumberland Hussars.

Northumberland married Lady Elizabeth Diana Montagu Douglas Scott (died 19 September 2012), daughter of Walter Montagu Douglas Scott, 8th Duke of Buccleuch, on 12 June 1946. They had seven children:

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