an Entity references as follows:
Hugh Algernon Percy, 10th Duke of Northumberland KG GCVO KStJ TD PC JP FRS (6 April 1914 – 11 October 1988), styled Lord Hugh Percy between 1918 and 1940, was a British landowner, soldier and peer. He 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, the 9th Duke, was killed in action in World War II.