Elizabeth Percy, Duchess of Northumberland British duchess (1922–2012) Parents Mary Montagu Douglas Scott, Duchess of Buccleuch Walter Montagu Douglas Scott, 8th Duke of Buccleuch Children Henry Percy, 11th Duke of Northumberland Lady Victoria Percy Lord James Percy Ralph Percy, 12th Duke of Northumberland Lady Julia Percy Lady Caroline Percy Lady Louise Percy Siblings Caroline Montagu Douglas Scott John Scott, 9th Duke of Buccleuch Partners Hugh Percy, 10th Duke of Northumberland